668675760626 has 8 divisors (see below), whose sum is σ = 1003614612780. Its totient is φ = 334137556368.

The previous prime is 668675760593. The next prime is 668675760631. The reversal of 668675760626 is 626067576866.

668675760626 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 639518490601 + 29157270025 = 799699^2 + 170755^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100157801 + ... + 100164476.

Almost surely, 2^668675760626 is an apocalyptic number.

668675760626 is a deficient number, since it is larger than the sum of its proper divisors (334938852154).

668675760626 is a wasteful number, since it uses less digits than its factorization.

668675760626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200323948.

The product of its (nonzero) digits is 182891520, while the sum is 65.

The spelling of 668675760626 in words is "six hundred sixty-eight billion, six hundred seventy-five million, seven hundred sixty thousand, six hundred twenty-six".