664748892304 has 20 divisors (see below), whose sum is σ = 1471943976064. Its totient is φ = 284892382368.

The previous prime is 664748892287. The next prime is 664748892329. The reversal of 664748892304 is 403298847466.

It is a happy number.

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, 2967628872 + ... + 2967629095.

Almost surely, 2^664748892304 is an apocalyptic number.

It is an amenable number.

664748892304 is an abundant number, since it is smaller than the sum of its proper divisors (807195083760).

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

664748892304 is a wasteful number, since it uses less digits than its factorization.

664748892304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5935257982 (or 5935257976 counting only the distinct ones).

The product of its (nonzero) digits is 55738368, while the sum is 61.

The spelling of 664748892304 in words is "six hundred sixty-four billion, seven hundred forty-eight million, eight hundred ninety-two thousand, three hundred four".