27703 is a member of OEIS A083625: starting positions of strings of three 6's in the decimal expansion of Pi. See my blog post titled The Digits of Pi from July 2016.

27703 is a cyclic number.

27703 forms part of a run of five consecutive iban numbers: 27000, 27001, 27002, 27003, 27004. These are numbers that when written out do not contain the letter "i" e.g. "twenty seven thousand seven hundred three". See my blog post titled Iban Numbers from July 2023.

27703 is a composite number whose prime factors contain only the digits 1, 2 and 3. See Bespoken for Sequences entry.

27703 can be rendered as a digit equation as follows:

2 + 7 / 7 = 0 + 3