564407656 has 32 divisors (see below), whose sum is σ = 1070402760. Its totient is φ = 278986752.

The previous prime is 564407647. The next prime is 564407663. The reversal of 564407656 is 656704465.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 349316100 + 215091556 = 18690^2 + 14666^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266056 + ... + 268168.

Almost surely, 2^564407656 is an apocalyptic number.

It is an amenable number.

564407656 is a deficient number, since it is larger than the sum of its proper divisors (505995104).

564407656 is a wasteful number, since it uses less digits than its factorization.

564407656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2485 (or 2481 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 43.

The square root of 564407656 is about 23757.2653308414. The cubic root of 564407656 is about 826.4139357785.

The spelling of 564407656 in words is "five hundred sixty-four million, four hundred seven thousand, six hundred fifty-six".