564542631 has 12 divisors (see below), whose sum is σ = 823525560. Its totient is φ = 372634800.

The previous prime is 564542609. The next prime is 564542717. The reversal of 564542631 is 136245465.

564542631 is a `hidden beast` number, since 5 + 645 + 4 + 2 + 6 + 3 + 1 = 666.

564542631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 564542631 - 2¹⁴ = 564526247 is a prime.

It is a super-2 number, since 2×564542631² = 637416764432804322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564542431) 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, 309621 + ... + 311438.

It is an arithmetic number, because the mean of its divisors is an integer number (68627130).

Almost surely, 2^564542631 is an apocalyptic number.

564542631 is a deficient number, since it is larger than the sum of its proper divisors (258982929).

564542631 is a wasteful number, since it uses less digits than its factorization.

564542631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621166 (or 621163 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 564542631 is about 23760.1058709762. The cubic root of 564542631 is about 826.4798079834.

The spelling of 564542631 in words is "five hundred sixty-four million, five hundred forty-two thousand, six hundred thirty-one".