672804169 has 4 divisors (see below), whose sum is σ = 672928720. Its totient is φ = 672679620.

The previous prime is 672804163. The next prime is 672804173. The reversal of 672804169 is 961408276.

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 a cyclic number.

It is not a de Polignac number, because 672804169 - 2⁹ = 672803657 is a prime.

It is a super-2 number, since 2×672804169² = 905330899647561122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (672804163) 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, 53787 + ... + 65104.

It is an arithmetic number, because the mean of its divisors is an integer number (168232180).

Almost surely, 2^672804169 is an apocalyptic number.

It is an amenable number.

672804169 is a deficient number, since it is larger than the sum of its proper divisors (124551).

672804169 is a wasteful number, since it uses less digits than its factorization.

672804169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124550.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 672804169 is about 25938.4689023851. The cubic root of 672804169 is about 876.2530809149.

The spelling of 672804169 in words is "six hundred seventy-two million, eight hundred four thousand, one hundred sixty-nine".