561716656 has 20 divisors (see below), whose sum is σ = 1089352152. Its totient is φ = 280593536.

The previous prime is 561716591. The next prime is 561716711. The reversal of 561716656 is 656617165.

561716656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1551 + ... + 33553.

Almost surely, 2^561716656 is an apocalyptic number.

It is an amenable number.

561716656 is a deficient number, since it is larger than the sum of its proper divisors (527635496).

561716656 is a wasteful number, since it uses less digits than its factorization.

561716656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33108 (or 33102 counting only the distinct ones).

The product of its digits is 226800, while the sum is 43.

The square root of 561716656 is about 23700.5623561974. The cubic root of 561716656 is about 825.0984423699.

The spelling of 561716656 in words is "five hundred sixty-one million, seven hundred sixteen thousand, six hundred fifty-six".