665932307328 has 96 divisors (see below), whose sum is σ = 1916756735400. Its totient is φ = 221923322880.

The previous prime is 665932307309. The next prime is 665932307387. The reversal of 665932307328 is 823703239566.

It is a happy number.

665932307328 is a `hidden beast` number, since 6 + 6 + 5 + 9 + 3 + 2 + 307 + 328 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4803463 + ... + 4940153.

Almost surely, 2^665932307328 is an apocalyptic number.

It is an amenable number.

665932307328 is an abundant number, since it is smaller than the sum of its proper divisors (1250824428072).

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

665932307328 is a wasteful number, since it uses less digits than its factorization.

665932307328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140940 (or 140925 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 54.

The spelling of 665932307328 in words is "six hundred sixty-five billion, nine hundred thirty-two million, three hundred seven thousand, three hundred twenty-eight".