564436660 has 24 divisors (see below), whose sum is σ = 1204751016. Its totient is φ = 222072960.

The previous prime is 564436643. The next prime is 564436711. The reversal of 564436660 is 66634465.

It can be written as a sum of positive squares in 4 ways, for example, as 47692836 + 516743824 = 6906^2 + 22732^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 230107 + ... + 232546.

It is an arithmetic number, because the mean of its divisors is an integer number (50197959).

Almost surely, 2^564436660 is an apocalyptic number.

It is an amenable number.

564436660 is an abundant number, since it is smaller than the sum of its proper divisors (640314356).

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

564436660 is a wasteful number, since it uses less digits than its factorization.

564436660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462723 (or 462721 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 40.

The square root of 564436660 is about 23757.8757467918. The cubic root of 564436660 is about 826.4280915628.

The spelling of 564436660 in words is "five hundred sixty-four million, four hundred thirty-six thousand, six hundred sixty".