672628923 has 12 divisors (see below), whose sum is σ = 978566680. Its totient is φ = 445192416.

The previous prime is 672628907. The next prime is 672628927. The reversal of 672628923 is 329826276.

It is not a de Polignac number, because 672628923 - 2⁴ = 672628907 is a prime.

It is a super-2 number, since 2×672628923² = 904859336112279858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (672628927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 267586 + ... + 270087.

Almost surely, 2^672628923 is an apocalyptic number.

672628923 is a deficient number, since it is larger than the sum of its proper divisors (305937757).

672628923 is a wasteful number, since it uses less digits than its factorization.

672628923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537818 (or 537815 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 672628923 is about 25935.0905724272. The cubic root of 672628923 is about 876.1769947921.

The spelling of 672628923 in words is "six hundred seventy-two million, six hundred twenty-eight thousand, nine hundred twenty-three".