656460666 has 32 divisors (see below), whose sum is σ = 1463529600. Its totient is φ = 218111040.

The previous prime is 656460653. The next prime is 656460671. The reversal of 656460666 is 666064656.

656460666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2751 + ... + 36338.

It is an arithmetic number, because the mean of its divisors is an integer number (45735300).

Almost surely, 2^656460666 is an apocalyptic number.

656460666 is an abundant number, since it is smaller than the sum of its proper divisors (807068934).

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

656460666 is a wasteful number, since it uses less digits than its factorization.

656460666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39411 (or 39405 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 45.

The square root of 656460666 is about 25621.4883642617. The cubic root of 656460666 is about 869.0996392896.

The spelling of 656460666 in words is "six hundred fifty-six million, four hundred sixty thousand, six hundred sixty-six".