668670902908 has 48 divisors (see below), whose sum is σ = 1244201865984. Its totient is φ = 313350490880.

The previous prime is 668670902897. The next prime is 668670902917. The reversal of 668670902908 is 809209076866.

It is a congruent number.

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, 59852163 + ... + 59863333.

It is an arithmetic number, because the mean of its divisors is an integer number (25920872208).

Almost surely, 2^668670902908 is an apocalyptic number.

668670902908 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

668670902908 is a deficient number, since it is larger than the sum of its proper divisors (575530963076).

668670902908 is a wasteful number, since it uses less digits than its factorization.

668670902908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14802 (or 14800 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 61.

The spelling of 668670902908 in words is "six hundred sixty-eight billion, six hundred seventy million, nine hundred two thousand, nine hundred eight".