673951923 has 12 divisors (see below), whose sum is σ = 985809760. Its totient is φ = 443613456.

The previous prime is 673951919. The next prime is 673951931. The reversal of 673951923 is 329159376.

It is not a de Polignac number, because 673951923 - 2² = 673951919 is a prime.

It is a super-2 number, since 2×673951923² = 908422389030795858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (673951963) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 473236 + ... + 474657.

Almost surely, 2^673951923 is an apocalyptic number.

673951923 is a deficient number, since it is larger than the sum of its proper divisors (311857837).

673951923 is a wasteful number, since it uses less digits than its factorization.

673951923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947978 (or 947975 counting only the distinct ones).

The product of its digits is 306180, while the sum is 45.

The square root of 673951923 is about 25960.5840265584. The cubic root of 673951923 is about 876.7510720938.

The spelling of 673951923 in words is "six hundred seventy-three million, nine hundred fifty-one thousand, nine hundred twenty-three".