664036264 has 16 divisors (see below), whose sum is σ = 1254873600. Its totient is φ = 329403312.

The previous prime is 664036259. The next prime is 664036277. The reversal of 664036264 is 462630466.

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, 325774 + ... + 327805.

It is an arithmetic number, because the mean of its divisors is an integer number (78429600).

Almost surely, 2^664036264 is an apocalyptic number.

It is an amenable number.

664036264 is a deficient number, since it is larger than the sum of its proper divisors (590837336).

664036264 is a wasteful number, since it uses less digits than its factorization.

664036264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653712 (or 653708 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 37.

The square root of 664036264 is about 25768.9011019096. The cubic root of 664036264 is about 872.4300161435.

The spelling of 664036264 in words is "six hundred sixty-four million, thirty-six thousand, two hundred sixty-four".