564978864 has 40 divisors (see below), whose sum is σ = 1468503232. Its totient is φ = 187168320.

The previous prime is 564978859. The next prime is 564978913. The reversal of 564978864 is 468879465.

It is a super-2 number, since 2×564978864² = 638402233533460992, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28282 + ... + 43929.

Almost surely, 2^564978864 is an apocalyptic number.

It is an amenable number.

564978864 is an abundant number, since it is smaller than the sum of its proper divisors (903524368).

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

564978864 is a wasteful number, since it uses less digits than its factorization.

564978864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72385 (or 72379 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 57.

The square root of 564978864 is about 23769.2840447499. The cubic root of 564978864 is about 826.6926321478.

The spelling of 564978864 in words is "five hundred sixty-four million, nine hundred seventy-eight thousand, eight hundred sixty-four".