665407060328 has 64 divisors (see below), whose sum is σ = 1339422480000. Its totient is φ = 308800622592.

The previous prime is 665407060259. The next prime is 665407060343. The reversal of 665407060328 is 823060704566.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2949443 + ... + 3167021.

It is an arithmetic number, because the mean of its divisors is an integer number (20928476250).

Almost surely, 2^665407060328 is an apocalyptic number.

665407060328 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

665407060328 is an abundant number, since it is smaller than the sum of its proper divisors (674015419672).

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

665407060328 is a wasteful number, since it uses less digits than its factorization.

665407060328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217914 (or 217910 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 47.

The spelling of 665407060328 in words is "six hundred sixty-five billion, four hundred seven million, sixty thousand, three hundred twenty-eight".