163608255 has 72 divisors (see below), whose sum is σ = 314928432. Its totient is φ = 81202176.

The previous prime is 163608241. The next prime is 163608271. The reversal of 163608255 is 552806361.

It is not a de Polignac number, because 163608255 - 2¹⁰ = 163607231 is a prime.

It is a super-2 number, since 2×163608255² = 53535322208290050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1838251 + ... + 1838339.

It is an arithmetic number, because the mean of its divisors is an integer number (4374006).

Almost surely, 2^163608255 is an apocalyptic number.

163608255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

163608255 is a deficient number, since it is larger than the sum of its proper divisors (151320177).

163608255 is an frugal number, since it uses more digits than its factorization.

163608255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 163608255 is about 12790.9442575597. The cubic root of 163608255 is about 546.9341874661.

The spelling of 163608255 in words is "one hundred sixty-three million, six hundred eight thousand, two hundred fifty-five".