564660631 has 2 divisors, whose sum is σ = 564660632. Its totient is φ = 564660630.

The previous prime is 564660617. The next prime is 564660727. The reversal of 564660631 is 136066465.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 564660631 - 2¹⁵ = 564627863 is a prime.

It is a super-2 number, since 2×564660631² = 637683256402636322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (564660331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282330315 + 282330316.

It is an arithmetic number, because the mean of its divisors is an integer number (282330316).

Almost surely, 2^564660631 is an apocalyptic number.

564660631 is a deficient number, since it is larger than the sum of its proper divisors (1).

564660631 is an equidigital number, since it uses as much as digits as its factorization.

564660631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 564660631 is about 23762.5888951520. The cubic root of 564660631 is about 826.5373872331.

The spelling of 564660631 in words is "five hundred sixty-four million, six hundred sixty thousand, six hundred thirty-one".