672475321 has 4 divisors (see below), whose sum is σ = 768543232. Its totient is φ = 576407412.

The previous prime is 672475319. The next prime is 672475337. The reversal of 672475321 is 123574276.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 672475321 - 2¹ = 672475319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (672475351) 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, 48033945 + ... + 48033958.

It is an arithmetic number, because the mean of its divisors is an integer number (192135808).

Almost surely, 2^672475321 is an apocalyptic number.

It is an amenable number.

672475321 is a deficient number, since it is larger than the sum of its proper divisors (96067911).

672475321 is an equidigital number, since it uses as much as digits as its factorization.

672475321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96067910.

The product of its digits is 70560, while the sum is 37.

The square root of 672475321 is about 25932.1291258547. The cubic root of 672475321 is about 876.1102949224.

The spelling of 672475321 in words is "six hundred seventy-two million, four hundred seventy-five thousand, three hundred twenty-one".