668067763076 has 12 divisors (see below), whose sum is σ = 1336135526208. Its totient is φ = 286314755592.

The previous prime is 668067763067. The next prime is 668067763133. The reversal of 668067763076 is 670367760866.

668067763076 is an admirable number.

It is a super-2 number, since 2×668067763076² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11929781456 + ... + 11929781511.

It is an arithmetic number, because the mean of its divisors is an integer number (111344627184).

Almost surely, 2^668067763076 is an apocalyptic number.

It is an amenable number.

668067763076 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

668067763076 is a wasteful number, since it uses less digits than its factorization.

668067763076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23859562978 (or 23859562976 counting only the distinct ones).

The product of its (nonzero) digits is 64012032, while the sum is 62.

The spelling of 668067763076 in words is "six hundred sixty-eight billion, sixty-seven million, seven hundred sixty-three thousand, seventy-six".