564640346 has 16 divisors (see below), whose sum is σ = 900515880. Its totient is φ = 264606720.

The previous prime is 564640337. The next prime is 564640367. The reversal of 564640346 is 643046465.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 564585121 + 55225 = 23761^2 + 235^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26261 + ... + 42648.

Almost surely, 2^564640346 is an apocalyptic number.

564640346 is a deficient number, since it is larger than the sum of its proper divisors (335875534).

564640346 is a wasteful number, since it uses less digits than its factorization.

564640346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69169.

The product of its (nonzero) digits is 207360, while the sum is 38.

The square root of 564640346 is about 23762.1620649300. The cubic root of 564640346 is about 826.5274895407.

The spelling of 564640346 in words is "five hundred sixty-four million, six hundred forty thousand, three hundred forty-six".