564136566 has 32 divisors (see below), whose sum is σ = 1299310848. Its totient is φ = 159949920.

The previous prime is 564136523. The next prime is 564136607. The reversal of 564136566 is 665631465.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

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, 45765 + ... + 56768.

It is an arithmetic number, because the mean of its divisors is an integer number (40603464).

Almost surely, 2^564136566 is an apocalyptic number.

564136566 is an abundant number, since it is smaller than the sum of its proper divisors (735174282).

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

564136566 is a wasteful number, since it uses less digits than its factorization.

564136566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102676.

The product of its digits is 388800, while the sum is 42.

The square root of 564136566 is about 23751.5592330272. The cubic root of 564136566 is about 826.2816032765.

The spelling of 564136566 in words is "five hundred sixty-four million, one hundred thirty-six thousand, five hundred sixty-six".