656373122 has 4 divisors (see below), whose sum is σ = 984559686. Its totient is φ = 328186560.

The previous prime is 656373097. The next prime is 656373143. The reversal of 656373122 is 221373656.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 651831961 + 4541161 = 25531^2 + 2131^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164093279 + ... + 164093282.

Almost surely, 2^656373122 is an apocalyptic number.

656373122 is a deficient number, since it is larger than the sum of its proper divisors (328186564).

656373122 is a wasteful number, since it uses less digits than its factorization.

656373122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328186563.

The product of its digits is 45360, while the sum is 35.

The square root of 656373122 is about 25619.7798975713. The cubic root of 656373122 is about 869.0610038998.

The spelling of 656373122 in words is "six hundred fifty-six million, three hundred seventy-three thousand, one hundred twenty-two".