265656 has 16 divisors (see below), whose sum is σ = 664200. Its totient is φ = 88544.

The previous prime is 265621. The next prime is 265703. The reversal of 265656 is 656562.

It is a super-2 number, since 2×265656² = 141146220672, 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 3 ways as a sum of consecutive naturals, for example, 5511 + ... + 5558.

2²⁶⁵⁶⁵⁶ is an apocalyptic number.

It is an amenable number.

265656 is an abundant number, since it is smaller than the sum of its proper divisors (398544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

265656 is a wasteful number, since it uses less digits than its factorization.

265656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11078 (or 11074 counting only the distinct ones).

The product of its digits is 10800, while the sum is 30.

The square root of 265656 is about 515.4182767423. The cubic root of 265656 is about 64.2845403666.

The spelling of 265656 in words is "two hundred sixty-five thousand, six hundred fifty-six".