672523331 has 4 divisors (see below), whose sum is σ = 694217664. Its totient is φ = 650829000.

The previous prime is 672523261. The next prime is 672523333. The reversal of 672523331 is 133325276.

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

It is a cyclic number.

It is not a de Polignac number, because 672523331 - 2¹⁰ = 672522307 is a prime.

It is a super-2 number, since 2×672523331² = 904575261478671122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (672523333) 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, 10847120 + ... + 10847181.

It is an arithmetic number, because the mean of its divisors is an integer number (173554416).

Almost surely, 2^672523331 is an apocalyptic number.

672523331 is a deficient number, since it is larger than the sum of its proper divisors (21694333).

672523331 is a wasteful number, since it uses less digits than its factorization.

672523331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21694332.

The product of its digits is 22680, while the sum is 32.

The square root of 672523331 is about 25933.0547949909. The cubic root of 672523331 is about 876.1311437937.

The spelling of 672523331 in words is "six hundred seventy-two million, five hundred twenty-three thousand, three hundred thirty-one".