665714602490688 has 56 divisors (see below), whose sum is σ = 1957077650845760. Its totient is φ = 221904867496320.

The previous prime is 665714602490671. The next prime is 665714602490741. The reversal of 665714602490688 is 886094206417566.

It is a happy number.

665714602490688 is a `hidden beast` number, since 6 + 6 + 5 + 7 + 1 + 4 + 602 + 4 + 9 + 0 + 6 + 8 + 8 = 666.

665714602490688 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192625751308 + ... + 192625754763.

Almost surely, 2^{665714602490688} is an apocalyptic number.

It is an amenable number.

665714602490688 is an abundant number, since it is smaller than the sum of its proper divisors (1291363048355072).

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

665714602490688 is a wasteful number, since it uses less digits than its factorization.

665714602490688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385251506092 (or 385251506076 counting only the distinct ones).

The product of its (nonzero) digits is 836075520, while the sum is 72.

The spelling of 665714602490688 in words is "six hundred sixty-five trillion, seven hundred fourteen billion, six hundred two million, four hundred ninety thousand, six hundred eighty-eight".