668373704 has 16 divisors (see below), whose sum is σ = 1253702400. Its totient is φ = 334053072.

The previous prime is 668373689. The next prime is 668373731. The reversal of 668373704 is 407373866.

668373704 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 (44) 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 3 ways as a sum of consecutive naturals, for example, 6389 + ... + 37115.

It is an arithmetic number, because the mean of its divisors is an integer number (78356400).

Almost surely, 2^668373704 is an apocalyptic number.

It is an amenable number.

668373704 is a deficient number, since it is larger than the sum of its proper divisors (585328696).

668373704 is a wasteful number, since it uses less digits than its factorization.

668373704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33452 (or 33448 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 44.

The square root of 668373704 is about 25852.9244767396. The cubic root of 668373704 is about 874.3254464753.

The spelling of 668373704 in words is "six hundred sixty-eight million, three hundred seventy-three thousand, seven hundred four".