565872 has 20 divisors (see below), whose sum is σ = 1461960. Its totient is φ = 188608.

The previous prime is 565867. The next prime is 565889. The reversal of 565872 is 278565.

It is a happy number.

It is a super-2 number, since 2×565872² = 640422240768, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 565872.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5847 + ... + 5942.

It is an arithmetic number, because the mean of its divisors is an integer number (73098).

2⁵⁶⁵⁸⁷² is an apocalyptic number.

It is an amenable number.

565872 is an abundant number, since it is smaller than the sum of its proper divisors (896088).

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

565872 is a wasteful number, since it uses less digits than its factorization.

565872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11800 (or 11794 counting only the distinct ones).

The product of its digits is 16800, while the sum is 33.

The square root of 565872 is about 752.2446410577. The cubic root of 565872 is about 82.7128023199.

The spelling of 565872 in words is "five hundred sixty-five thousand, eight hundred seventy-two".