672125656 has 16 divisors (see below), whose sum is σ = 1270160640. Its totient is φ = 333416160.

The previous prime is 672125639. The next prime is 672125677. The reversal of 672125656 is 656521276.

It is an alternating number because its digits alternate between even and odd.

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, 329755 + ... + 331786.

It is an arithmetic number, because the mean of its divisors is an integer number (79385040).

Almost surely, 2^672125656 is an apocalyptic number.

It is an amenable number.

672125656 is a deficient number, since it is larger than the sum of its proper divisors (598034984).

672125656 is a wasteful number, since it uses less digits than its factorization.

672125656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661674 (or 661670 counting only the distinct ones).

The product of its digits is 151200, while the sum is 40.

The square root of 672125656 is about 25925.3863230618. The cubic root of 672125656 is about 875.9584191046.

The spelling of 672125656 in words is "six hundred seventy-two million, one hundred twenty-five thousand, six hundred fifty-six".