656625456 has 60 divisors (see below), whose sum is σ = 1840717008. Its totient is φ = 218508672.

The previous prime is 656625449. The next prime is 656625469. The reversal of 656625456 is 654526656.

It is a happy number.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90541 + ... + 97523.

Almost surely, 2^656625456 is an apocalyptic number.

It is an amenable number.

656625456 is an abundant number, since it is smaller than the sum of its proper divisors (1184091552).

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

656625456 is a wasteful number, since it uses less digits than its factorization.

656625456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7650 (or 7641 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 45.

The square root of 656625456 is about 25624.7040178028. The cubic root of 656625456 is about 869.1723559832.

The spelling of 656625456 in words is "six hundred fifty-six million, six hundred twenty-five thousand, four hundred fifty-six".