672404 has 12 divisors (see below), whose sum is σ = 1189524. Its totient is φ = 332544.

The previous prime is 672379. The next prime is 672439. The reversal of 672404 is 404276.

It can be written as a sum of positive squares in 2 ways, for example, as 300304 + 372100 = 548^2 + 610^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 672404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 479 + ... + 1254.

It is an arithmetic number, because the mean of its divisors is an integer number (99127).

2⁶⁷²⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

672404 is a deficient number, since it is larger than the sum of its proper divisors (517120).

672404 is a wasteful number, since it uses less digits than its factorization.

672404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1834 (or 1832 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 672404 is about 820.0024390208. The cubic root of 672404 is about 87.6079321160.

The spelling of 672404 in words is "six hundred seventy-two thousand, four hundred four".