672673931 has 4 divisors (see below), whose sum is σ = 673281600. Its totient is φ = 672066264.

The previous prime is 672673907. The next prime is 672673943. The reversal of 672673931 is 139376276.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-672673931 is a prime.

It is a super-2 number, since 2×672673931² = 904980434893985522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (672673961) 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, 302171 + ... + 304388.

It is an arithmetic number, because the mean of its divisors is an integer number (168320400).

Almost surely, 2^672673931 is an apocalyptic number.

672673931 is a deficient number, since it is larger than the sum of its proper divisors (607669).

672673931 is a wasteful number, since it uses less digits than its factorization.

672673931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607668.

The product of its digits is 285768, while the sum is 44.

The square root of 672673931 is about 25935.9582626129. The cubic root of 672673931 is about 876.1965370653.

The spelling of 672673931 in words is "six hundred seventy-two million, six hundred seventy-three thousand, nine hundred thirty-one".