664306892 has 24 divisors (see below), whose sum is σ = 1246512960. Its totient is φ = 308655360.

The previous prime is 664306847. The next prime is 664306913. The reversal of 664306892 is 298603466.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56459 + ... + 67202.

It is an arithmetic number, because the mean of its divisors is an integer number (51938040).

Almost surely, 2^664306892 is an apocalyptic number.

It is an amenable number.

664306892 is a deficient number, since it is larger than the sum of its proper divisors (582206068).

664306892 is a wasteful number, since it uses less digits than its factorization.

664306892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123761 (or 123759 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 44.

The square root of 664306892 is about 25774.1516252233. The cubic root of 664306892 is about 872.5485196730.

The spelling of 664306892 in words is "six hundred sixty-four million, three hundred six thousand, eight hundred ninety-two".