672909172 has 24 divisors (see below), whose sum is σ = 1273735400. Its totient is φ = 309211776.

The previous prime is 672909161. The next prime is 672909203. The reversal of 672909172 is 271909276.

672909172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 146023056 + 526886116 = 12084^2 + 22954^2 .

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, 16347 + ... + 40162.

Almost surely, 2^672909172 is an apocalyptic number.

It is an amenable number.

672909172 is a deficient number, since it is larger than the sum of its proper divisors (600826228).

672909172 is a wasteful number, since it uses less digits than its factorization.

672909172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56755 (or 56753 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 672909172 is about 25940.4929020248. The cubic root of 672909172 is about 876.2986634784.

The spelling of 672909172 in words is "six hundred seventy-two million, nine hundred nine thousand, one hundred seventy-two".