672653331 has 144 divisors (see below), whose sum is σ = 1290691584. Its totient is φ = 334591488.

The previous prime is 672653323. The next prime is 672653353. The reversal of 672653331 is 133356276.

672653331 is a `hidden beast` number, since 67 + 265 + 3 + 331 = 666.

It is not a de Polignac number, because 672653331 - 2³ = 672653323 is a prime.

It is a super-2 number, since 2×672653331² = 904925007410791122, which contains 22 as substring.

Its product of digits (68040) is a multiple of the sum of its prime divisors (180).

It is not an unprimeable number, because it can be changed into a prime (672653431) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 8104216 + ... + 8104298.

It is an arithmetic number, because the mean of its divisors is an integer number (8963136).

Almost surely, 2^672653331 is an apocalyptic number.

672653331 is a deficient number, since it is larger than the sum of its proper divisors (618038253).

672653331 is a wasteful number, since it uses less digits than its factorization.

672653331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190 (or 180 counting only the distinct ones).

The product of its digits is 68040, while the sum is 36.

The square root of 672653331 is about 25935.5611275330. The cubic root of 672653331 is about 876.1875927452.

The spelling of 672653331 in words is "six hundred seventy-two million, six hundred fifty-three thousand, three hundred thirty-one".