672855804 has 72 divisors (see below), whose sum is σ = 1763497008. Its totient is φ = 216138240.

The previous prime is 672855793. The next prime is 672855857. The reversal of 672855804 is 408558276.

672855804 is a `hidden beast` number, since 67 + 2 + 8 + 5 + 580 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 672855804.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 140164 + ... + 144884.

It is an arithmetic number, because the mean of its divisors is an integer number (24493014).

Almost surely, 2^672855804 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 672855804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (881748504).

672855804 is an abundant number, since it is smaller than the sum of its proper divisors (1090641204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

672855804 is a wasteful number, since it uses less digits than its factorization.

672855804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4875 (or 4870 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The square root of 672855804 is about 25939.4642196018. The cubic root of 672855804 is about 876.2754966353.

The spelling of 672855804 in words is "six hundred seventy-two million, eight hundred fifty-five thousand, eight hundred four".