564420666 has 32 divisors (see below), whose sum is σ = 1157257728. Its totient is φ = 183420720.

The previous prime is 564420653. The next prime is 564420671. The reversal of 564420666 is 666024465.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161065 + ... + 164531.

It is an arithmetic number, because the mean of its divisors is an integer number (36164304).

Almost surely, 2^564420666 is an apocalyptic number.

564420666 is an abundant number, since it is smaller than the sum of its proper divisors (592837062).

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

564420666 is a wasteful number, since it uses less digits than its factorization.

564420666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4146.

The product of its (nonzero) digits is 207360, while the sum is 39.

The square root of 564420666 is about 23757.5391402393. The cubic root of 564420666 is about 826.4202855404.

The spelling of 564420666 in words is "five hundred sixty-four million, four hundred twenty thousand, six hundred sixty-six".