668887560976 has 20 divisors (see below), whose sum is σ = 1337775122944. Its totient is φ = 323655271200.

The previous prime is 668887560953. The next prime is 668887560977. The reversal of 668887560976 is 679065788866.

668887560976 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

668887560976 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (668887560977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 674281320 + ... + 674282311.

Almost surely, 2^668887560976 is an apocalyptic number.

It is an amenable number.

668887560976 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.

668887560976 is a wasteful number, since it uses less digits than its factorization.

668887560976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348563670 (or 1348563664 counting only the distinct ones).

The product of its (nonzero) digits is 1463132160, while the sum is 76.

The spelling of 668887560976 in words is "six hundred sixty-eight billion, eight hundred eighty-seven million, five hundred sixty thousand, nine hundred seventy-six".