672908231 has 2 divisors, whose sum is σ = 672908232. Its totient is φ = 672908230.

The previous prime is 672908213. The next prime is 672908261. The reversal of 672908231 is 132809276.

672908231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (672908213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-672908231 is a prime.

It is a super-2 number, since 2×672908231² = 905610974695098722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (672908261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336454115 + 336454116.

It is an arithmetic number, because the mean of its divisors is an integer number (336454116).

Almost surely, 2^672908231 is an apocalyptic number.

672908231 is a deficient number, since it is larger than the sum of its proper divisors (1).

672908231 is an equidigital number, since it uses as much as digits as its factorization.

672908231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 672908231 is about 25940.4747643523. The cubic root of 672908231 is about 876.2982550045.

The spelling of 672908231 in words is "six hundred seventy-two million, nine hundred eight thousand, two hundred thirty-one".