668312344 has 16 divisors (see below), whose sum is σ = 1432098000. Its totient is φ = 286419552.

The previous prime is 668312339. The next prime is 668312377. The reversal of 668312344 is 443213866.

668312344 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 5967019 + ... + 5967130.

It is an arithmetic number, because the mean of its divisors is an integer number (89506125).

Almost surely, 2^668312344 is an apocalyptic number.

It is an amenable number.

668312344 is an abundant number, since it is smaller than the sum of its proper divisors (763785656).

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

668312344 is a wasteful number, since it uses less digits than its factorization.

668312344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11934162 (or 11934158 counting only the distinct ones).

The product of its digits is 82944, while the sum is 37.

The square root of 668312344 is about 25851.7377365623. The cubic root of 668312344 is about 874.2986898615.

The spelling of 668312344 in words is "six hundred sixty-eight million, three hundred twelve thousand, three hundred forty-four".