564243858 has 24 divisors (see below), whose sum is σ = 1255571148. Its totient is φ = 182997792.

The previous prime is 564243851. The next prime is 564243907. The reversal of 564243858 is 858342465.

564243858 is a `hidden beast` number, since 564 + 2 + 4 + 3 + 85 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 411400089 + 152843769 = 20283^2 + 12363^2 .

It is a super-2 number, since 2×564243858² = 636742262581448328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (564243851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 422941 + ... + 424272.

Almost surely, 2^564243858 is an apocalyptic number.

564243858 is an abundant number, since it is smaller than the sum of its proper divisors (691327290).

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

564243858 is a wasteful number, since it uses less digits than its factorization.

564243858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847258 (or 847255 counting only the distinct ones).

The product of its digits is 921600, while the sum is 45.

The square root of 564243858 is about 23753.8177563102. The cubic root of 564243858 is about 826.3339829020. Note that the first 3 decimals are identical.

The spelling of 564243858 in words is "five hundred sixty-four million, two hundred forty-three thousand, eight hundred fifty-eight".