672668312 has 16 divisors (see below), whose sum is σ = 1261761840. Its totient is φ = 336198496.

The previous prime is 672668309. The next prime is 672668323. The reversal of 672668312 is 213866276.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 672668312.

It is a congruent 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, 5933 + ... + 37155.

It is an arithmetic number, because the mean of its divisors is an integer number (78860115).

Almost surely, 2^672668312 is an apocalyptic number.

It is an amenable number.

672668312 is a deficient number, since it is larger than the sum of its proper divisors (589093528).

672668312 is a wasteful number, since it uses less digits than its factorization.

672668312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33922 (or 33918 counting only the distinct ones).

The product of its digits is 145152, while the sum is 41.

The square root of 672668312 is about 25935.8499378756. The cubic root of 672668312 is about 876.1940973682.

The spelling of 672668312 in words is "six hundred seventy-two million, six hundred sixty-eight thousand, three hundred twelve".