656680088164 has 9 divisors (see below), whose sum is σ = 1149192990547. Its totient is φ = 328339233724.

The previous prime is 656680088161. The next prime is 656680088171. The reversal of 656680088164 is 461880086656.

The square root of 656680088164 is 810358.

It is a perfect power (a square), and thus also a powerful number.

656680088164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 656680088099 and 656680088108.

It is not an unprimeable number, because it can be changed into a prime (656680088161) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1418127 + ... + 1823305.

Almost surely, 2^656680088164 is an apocalyptic number.

656680088164 is the 810358-th square number.

It is an amenable number.

656680088164 is a deficient number, since it is larger than the sum of its proper divisors (492512902383).

656680088164 is an frugal number, since it uses more digits than its factorization.

656680088164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810362 (or 405181 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 58.

The spelling of 656680088164 in words is "six hundred fifty-six billion, six hundred eighty million, eighty-eight thousand, one hundred sixty-four".