668804800086 has 48 divisors (see below), whose sum is σ = 1496380176720. Its totient is φ = 215752662720.

The previous prime is 668804800067. The next prime is 668804800109. The reversal of 668804800086 is 680008408866.

668804800086 is a `hidden beast` number, since 6 + 6 + 8 + 80 + 480 + 0 + 0 + 86 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3879345 + ... + 4048076.

It is an arithmetic number, because the mean of its divisors is an integer number (31174587015).

Almost surely, 2^668804800086 is an apocalyptic number.

668804800086 is an abundant number, since it is smaller than the sum of its proper divisors (827575376634).

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

668804800086 is a wasteful number, since it uses less digits than its factorization.

668804800086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7927581 (or 7927578 counting only the distinct ones).

The product of its (nonzero) digits is 3538944, while the sum is 54.

The spelling of 668804800086 in words is "six hundred sixty-eight billion, eight hundred four million, eight hundred thousand, eighty-six".