564344638 has 16 divisors (see below), whose sum is σ = 994509936. Its totient is φ = 236787840.

The previous prime is 564344633. The next prime is 564344657. The reversal of 564344638 is 836443465.

It is a junction number, because it is equal to n+sod(n) for n = 564344594 and 564344603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564344633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 986331 + ... + 986902.

It is an arithmetic number, because the mean of its divisors is an integer number (62156871).

Almost surely, 2^564344638 is an apocalyptic number.

564344638 is a deficient number, since it is larger than the sum of its proper divisors (430165298).

564344638 is a wasteful number, since it uses less digits than its factorization.

564344638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1973259.

The product of its digits is 829440, while the sum is 43.

The square root of 564344638 is about 23755.9390048047. The cubic root of 564344638 is about 826.3831773416.

The spelling of 564344638 in words is "five hundred sixty-four million, three hundred forty-four thousand, six hundred thirty-eight".