668675760625 has 20 divisors (see below), whose sum is σ = 838530022000. Its totient is φ = 533050218000.

The previous prime is 668675760593. The next prime is 668675760631. The reversal of 668675760625 is 526067576866.

668675760625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 668675760625 - 2⁵ = 668675760593 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1713375 + ... + 2067124.

It is an arithmetic number, because the mean of its divisors is an integer number (41926501100).

Almost surely, 2^668675760625 is an apocalyptic number.

It is an amenable number.

668675760625 is a deficient number, since it is larger than the sum of its proper divisors (169854261375).

668675760625 is an equidigital number, since it uses as much as digits as its factorization.

668675760625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3780802 (or 3780787 counting only the distinct ones).

The product of its (nonzero) digits is 152409600, while the sum is 64.

The spelling of 668675760625 in words is "six hundred sixty-eight billion, six hundred seventy-five million, seven hundred sixty thousand, six hundred twenty-five".