564645880 has 16 divisors (see below), whose sum is σ = 1270453320. Its totient is φ = 225858336.

The previous prime is 564645847. The next prime is 564645899. The reversal of 564645880 is 88546465.

It is a self number, because there is not a number n which added to its sum of digits gives 564645880.

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, 7058034 + ... + 7058113.

Almost surely, 2^564645880 is an apocalyptic number.

It is an amenable number.

564645880 is an abundant number, since it is smaller than the sum of its proper divisors (705807440).

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

564645880 is a wasteful number, since it uses less digits than its factorization.

564645880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14116158 (or 14116154 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 46.

The square root of 564645880 is about 23762.2785102776. The cubic root of 564645880 is about 826.5301897776.

The spelling of 564645880 in words is "five hundred sixty-four million, six hundred forty-five thousand, eight hundred eighty".