672664 has 16 divisors (see below), whose sum is σ = 1288800. Its totient is φ = 328992.

The previous prime is 672653. The next prime is 672667. The reversal of 672664 is 466276.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 519 + ... + 1270.

It is an arithmetic number, because the mean of its divisors is an integer number (80550).

2⁶⁷²⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

672664 is a deficient number, since it is larger than the sum of its proper divisors (616136).

672664 is a wasteful number, since it uses less digits than its factorization.

672664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1842 (or 1838 counting only the distinct ones).

The product of its digits is 12096, while the sum is 31.

The square root of 672664 is about 820.1609598122. The cubic root of 672664 is about 87.6192225144.

The spelling of 672664 in words is "six hundred seventy-two thousand, six hundred sixty-four".