564316866 has 24 divisors (see below), whose sum is σ = 1252509804. Its totient is φ = 183517440.

The previous prime is 564316861. The next prime is 564316867. The reversal of 564316866 is 668613465.

564316866 is a `hidden beast` number, since 564 + 3 + 1 + 6 + 86 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 385533225 + 178783641 = 19635^2 + 13371^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (564316861) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 381591 + ... + 383066.

Almost surely, 2^564316866 is an apocalyptic number.

564316866 is an abundant number, since it is smaller than the sum of its proper divisors (688192938).

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

564316866 is a wasteful number, since it uses less digits than its factorization.

564316866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764706 (or 764703 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 564316866 is about 23755.3544700979. The cubic root of 564316866 is about 826.3696213874.

The spelling of 564316866 in words is "five hundred sixty-four million, three hundred sixteen thousand, eight hundred sixty-six".