668675760624 has 100 divisors (see below), whose sum is σ = 2049185343744. Its totient is φ = 209780623872.

The previous prime is 668675760593. The next prime is 668675760631. The reversal of 668675760624 is 426067576866.

It is a congruent number.

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 19 ways as a sum of consecutive naturals, for example, 15153072 + ... + 15197135.

Almost surely, 2^668675760624 is an apocalyptic number.

It is an amenable number.

668675760624 is an abundant number, since it is smaller than the sum of its proper divisors (1380509583120).

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

668675760624 is a wasteful number, since it uses less digits than its factorization.

668675760624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30350244 (or 30350229 counting only the distinct ones).

The product of its (nonzero) digits is 121927680, while the sum is 63.

The spelling of 668675760624 in words is "six hundred sixty-eight billion, six hundred seventy-five million, seven hundred sixty thousand, six hundred twenty-four".