561652564 has 12 divisors (see below), whose sum is σ = 1072245888. Its totient is φ = 255296600.

The previous prime is 561652561. The next prime is 561652573. The reversal of 561652564 is 465256165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561652561) 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 3 ways as a sum of consecutive naturals, for example, 6382372 + ... + 6382459.

It is an arithmetic number, because the mean of its divisors is an integer number (89353824).

Almost surely, 2^561652564 is an apocalyptic number.

It is an amenable number.

561652564 is a deficient number, since it is larger than the sum of its proper divisors (510593324).

561652564 is a wasteful number, since it uses less digits than its factorization.

561652564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12764846 (or 12764844 counting only the distinct ones).

The product of its digits is 216000, while the sum is 40.

The square root of 561652564 is about 23699.2101978104. The cubic root of 561652564 is about 825.0670598688.

The spelling of 561652564 in words is "five hundred sixty-one million, six hundred fifty-two thousand, five hundred sixty-four".