564768631 has 4 divisors (see below), whose sum is σ = 645449872. Its totient is φ = 484087392.

The previous prime is 564768623. The next prime is 564768637. The reversal of 564768631 is 136867465.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 564768631 - 2³ = 564768623 is a prime.

It is a super-2 number, since 2×564768631² = 637927213123228322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564768637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40340610 + ... + 40340623.

It is an arithmetic number, because the mean of its divisors is an integer number (161362468).

Almost surely, 2^564768631 is an apocalyptic number.

564768631 is a deficient number, since it is larger than the sum of its proper divisors (80681241).

564768631 is an equidigital number, since it uses as much as digits as its factorization.

564768631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80681240.

The product of its digits is 725760, while the sum is 46.

The square root of 564768631 is about 23764.8612661635. The cubic root of 564768631 is about 826.5900798549.

The spelling of 564768631 in words is "five hundred sixty-four million, seven hundred sixty-eight thousand, six hundred thirty-one".