27464 is a product of a power of 2 and a 4k+1 prime number and so it can be expressed as a sum of two squares in one way only viz. 158^2 + 50^2.

27464 is a member of OEIS A064799: sum of n-th prime number and n-th composite number, here 3147 + 24317 and n= 2701. See Bespoken for Sequences entry. From this number to around 40000, the members are:

27464, 27477, 27486, 27509, 27522, 27525, 27532, 27545, 27562, 27569, 27576, 27579, 27598, 27603, 27630, 27635, 27645, 27664, 27675, 27685, 27697, 27704, 27719, 27724, 27745, 27768, 27787, 27800, 27809, 27838, 27851, 27859, 27866, 27875, 27882, 27895, 27921, 27938, 27953, 27959, 27974, 27987, 27994, 28005, 28018, 28039, 28046, 28051, 28060, 28079, 28093, 28112, 28123, 28126, 28131, 28153, 28164, 28179, 28184, 28191, 28194, 28205, 28231, 28250, 28253, 28259, 28280, 28297, 28312, 28323, 28338, 28345, 28351, 28358, 28379, 28386, 28397, 28404, 28407, 28420, 28427, 28458, 28469, 28478, 28485, 28490, 28497, 28506, 28547, 28550, 28555, 28558, 28571, 28591, 28597, 28604, 28613, 28625, 28633, 28652, 28671, 28674, 28687, 28704, 28713, 28720, 28725, 28732, 28739, 28743, 28796, 28811, 28816, 28837, 28854, 28857, 28862, 28869, 28882, 28885, 28892, 28905, 28918, 28925, 28930, 28945, 28956, 28963, 28970, 28985, 28996, 29011, 29028, 29037, 29044, 29057, 29063, 29073, 29096, 29103, 29106, 29125, 29149, 29156, 29159, 29178, 29185, 29203, 29218, 29229, 29236, 29249, 29253, 29260, 29265, 29275, 29294, 29307, 29324, 29327, 29333, 29349, 29354, 29363, 29376, 29389, 29420, 29437, 29446, 29451, 29454, 29461, 29485, 29498, 29507, 29519, 29526, 29533, 29540, 29555, 29562, 29581, 29592, 29605, 29608, 29619, 29623, 29629, 29656, 29661, 29674, 29683, 29688, 29707, 29716, 29727, 29743, 29761, 29768, 29775, 29784, 29795, 29802, 29811, 29818, 29831, 29842, 29863, 29874, 29883, 29888, 29901, 29929, 29949, 29954, 29967, 29986, 29993, 30024, 30031, 30040, 30047, 30070, 30083, 30086, 30091, 30098, 30105, 30109, 30120, 30123, 30128, 30135, 30143, 30146, 30153, 30176, 30195, 30202, 30221, 30234, 30243, 30256, 30263, 30274, 30287, 30290, 30307, 30310, 30321, 30324, 30335, 30355, 30362, 30383, 30388, 30391, 30398, 30421, 30428, 30435, 30454, 30461, 30476, 30489, 30506, 30509, 30517, 30524, 30529, 30544, 30557, 30562, 30565, 30585, 30602, 30639, 30653, 30661, 30676, 30705, 30709, 30723, 30730, 30743, 30750, 30755, 30758, 30775, 30806, 30815, 30840, 30847, 30878, 30889, 30892, 30911, 30916, 30923, 30936, 30945, 30968, 30971, 30979, 31002, 31021, 31024, 31035, 31038, 31049, 31081, 31084, 31113, 31120, 31135, 31152, 31159, 31180, 31197, 31200, 31207, 31213, 31246, 31251, 31254, 31259, 31267, 31270, 31283, 31288, 31295, 31302, 31315, 31318, 31325, 31331, 31339, 31348, 31355, 31361, 31382, 31387, 31420, 31431, 31441, 31459, 31462, 31485, 31488, 31493, 31501, 31510, 31517, 31534, 31549, 31554, 31573, 31582, 31587, 31609, 31617, 31630, 31643, 31650, 31661, 31664, 31675, 31678, 31691, 31720, 31733, 31753, 31756, 31775, 31786, 31795, 31806, 31855, 31858, 31863, 31871, 31881, 31892, 31895, 31906, 31937, 31940, 31977, 31984, 31995, 32003, 32006, 32025, 32030, 32037, 32046, 32063, 32078, 32095, 32102, 32117, 32122, 32143, 32149, 32156, 32159, 32170, 32183, 32187, 32194, 32207, 32215, 32222, 32227, 32240, 32243, 32251, 32256, 32269, 32276, 32285, 32290, 32293, 32301, 32320, 32331, 32338, 32347, 32361, 32368, 32391, 32394, 32401, 32415, 32434, 32439, 32454, 32461, 32466, 32487, 32494, 32511, 32520, 32525, 32534, 32557, 32566, 32579, 32587, 32594, 32611, 32624, 32643, 32674, 32683, 32688, 32691, 32696, 32703, 32731, 32737, 32752, 32777, 32801, 32808, 32811, 32818, 32829, 32836, 32851, 32858, 32865, 32878, 32889, 32896, 32899, 32913, 32924, 32937, 32946, 32965, 32985, 32996, 33003, 33013, 33030, 33037, 33044, 33053, 33070, 33091, 33097, 33100, 33111, 33114, 33125, 33138, 33145, 33154, 33161, 33173, 33194, 33205, 33224, 33251, 33256, 33263, 33295, 33298, 33303, 33312, 33319, 33333, 33346, 33365, 33370, 33379, 33403, 33410, 33413, 33426, 33461, 33468, 33487, 33500, 33507, 33510, 33539, 33554, 33571, 33586, 33591, 33606, 33619, 33624, 33631, 33638, 33641, 33679, 33684, 33691, 33712, 33725, 33751, 33759, 33782, 33785, 33802, 33821, 33834, 33847, 33866, 33869, 33877, 33884, 33891, 33896, 33903, 33918, 33923, 33926, 33949, 33958, 33971, 33978, 33989, 33997, 34006, 34019, 34039, 34052, 34059, 34070, 34073, 34097, 34112, 34119, 34126, 34131, 34150, 34157, 34178, 34201, 34204, 34217, 34242, 34247, 34266, 34285, 34288, 34311, 34315, 34321, 34334, 34343, 34356, 34367, 34382, 34387, 34390, 34409, 34427, 34466, 34473, 34480, 34487, 34500, 34511, 34518, 34531, 34540, 34547, 34552, 34559, 34575, 34606, 34613, 34625, 34635, 34658, 34665, 34674, 34687, 34698, 34701, 34712, 34715, 34723, 34734, 34737, 34748, 34761, 34780, 34801, 34808, 34813, 34822, 34845, 34852, 34859, 34891, 34898, 34913, 34921, 34934, 34947, 34954, 34965, 34968, 34979, 35011, 35014, 35031, 35040, 35045, 35048, 35055, 35074, 35079, 35082, 35089, 35094, 35121, 35126, 35135, 35142, 35153, 35157, 35162, 35169, 35179, 35184, 35191, 35222, 35235, 35239, 35247, 35254, 35259, 35281, 35304, 35313, 35318, 35321, 35327, 35401, 35410, 35415, 35424, 35447, 35450, 35455, 35470, 35481, 35484, 35489, 35511, 35518, 35529, 35549, 35556, 35577, 35594, 35601, 35610, 35617, 35622, 35643, 35656, 35679, 35682, 35687, 35690, 35703, 35714, 35733, 35736, 35759, 35767, 35786, 35817, 35820, 35831, 35846, 35857, 35866, 35883, 35934, 35941, 35952, 35961, 35972, 35985, 35992, 36011, 36014, 36037, 36044, 36047, 36053, 36060, 36069, 36076, 36083, 36094, 36113, 36116, 36139, 36142, 36159, 36175, 36187, 36194, 36197, 36211, 36222, 36243, 36248, 36263, 36271, 36276, 36313, 36316, 36321, 36329, 36343, 36346, 36351, 36366, 36379, 36387, 36392, 36399, 36402, 36409, 36414, 36435, 36446, 36449, 36460, 36467, 36480, 36483, 36508, 36521, 36534, 36541, 36548, 36553, 36578, 36581, 36587, 36613, 36616, 36623, 36628, 36635, 36645, 36662, 36669, 36672, 36683, 36696, 36711, 36718, 36753, 36760, 36775, 36782, 36787, 36790, 36821, 36845, 36854, 36859, 36866, 36875, 36881, 36884, 36913, 36916, 36923, 36928, 36955, 36974, 36997, 37000, 37007, 37025, 37033, 37036, 37053, 37066, 37069, 37083, 37088, 37095, 37102, 37117, 37128, 37135, 37144, 37157, 37162, 37181, 37185, 37196, 37205, 37222, 37229, 37236, 37267, 37270, 37281, 37300, 37303, 37314, 37323, 37328, 37337, 37351, 37377, 37418, 37421, 37435, 37446, 37453, 37466, 37469, 37483, 37488, 37491, 37496, 37503, 37522, 37537, 37550, 37557, 37562, 37577, 37608, 37613, 37623, 37634, 37643, 37651, 37663, 37682, 37691, 37696, 37711, 37728, 37735, 37744, 37749, 37756, 37759, 37770, 37773, 37786, 37791, 37794, 37799, 37807, 37816, 37821, 37828, 37861, 37886, 37897, 37906, 37925, 37936, 37939, 37946, 37957, 37960, 37965, 37984, 37991, 38004, 38007, 38024, 38027, 38050, 38057, 38065, 38074, 38093, 38098, 38117, 38130, 38139, 38146, 38151, 38173, 38180, 38211, 38234, 38247, 38251, 38259, 38278, 38283, 38346, 38351, 38354, 38367, 38374, 38385, 38389, 38403, 38416, 38445, 38448, 38453, 38468, 38491, 38498, 38501, 38509, 38517, 38528, 38543, 38548, 38551, 38562, 38569, 38578, 38589, 38605, 38616, 38623, 38626, 38639, 38663, 38683, 38692, 38703, 38722, 38735, 38738, 38751, 38756, 38769, 38773, 38785, 38788, 38795, 38814, 38821, 38828, 38863, 38870, 38873, 38887, 38892, 38899, 38918, 38937, 38941, 38958, 38965, 38972, 38981, 38988, 38999, 39019, 39028, 39039, 39048, 39059, 39062, 39067, 39086, 39113, 39126, 39149, 39152, 39157, 39160, 39183, 39190, 39197, 39212, 39229, 39236, 39257, 39268, 39281, 39284, 39303, 39346, 39351, 39376, 39379, 39387, 39398, 39411, 39414, 39421, 39432, 39441, 39446, 39453, 39467, 39481, 39490, 39495, 39502, 39515, 39546, 39567, 39574, 39599, 39607, 39618, 39631, 39634, 39645, 39666, 39673, 39681, 39686, 39699, 39714, 39725, 39745, 39758, 39767, 39774, 39787, 39792, 39807, 39818, 39821, 39835, 39866, 39883, 39886, 39899, 39906, 39911, 39914, 39919, 39926, 39953, 39958, 39977, 39980, 39985, 39992, 40007, 40063, 40070, 40123, 40126, 40143, 40151, 40158

27464 is a tau and untouchable number.

27464 can be rendered as a digit equation as follows:

2 * 7 - 4 = 6 + 4