668894385700 has 36 divisors (see below), whose sum is σ = 1452817013760. Its totient is φ = 267315137440.

The previous prime is 668894385683. The next prime is 668894385751. The reversal of 668894385700 is 7583498866.

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, 2921860 + ... + 3142459.

It is an arithmetic number, because the mean of its divisors is an integer number (40356028160).

Almost surely, 2^668894385700 is an apocalyptic number.

It is an amenable number.

668894385700 is an abundant number, since it is smaller than the sum of its proper divisors (783922628060).

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

668894385700 is a wasteful number, since it uses less digits than its factorization.

668894385700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6065436 (or 6065429 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 64.

The spelling of 668894385700 in words is "six hundred sixty-eight billion, eight hundred ninety-four million, three hundred eighty-five thousand, seven hundred".