664924 has 24 divisors (see below), whose sum is σ = 1321040. Its totient is φ = 290304.

The previous prime is 664891. The next prime is 664933. The reversal of 664924 is 429466.

It is a plaindrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 652 + ... + 1324.

2⁶⁶⁴⁹²⁴ is an apocalyptic number.

It is an amenable number.

664924 is a deficient number, since it is larger than the sum of its proper divisors (656116).

664924 is a wasteful number, since it uses less digits than its factorization.

664924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709 (or 707 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

The square root of 664924 is about 815.4287215937. The cubic root of 664924 is about 87.2818620752.

The spelling of 664924 in words is "six hundred sixty-four thousand, nine hundred twenty-four".