804640804 has 72 divisors (see below), whose sum is σ = 1725403680. Its totient is φ = 326050560.

The previous prime is 804640801. The next prime is 804640817. The reversal of 804640804 is 408046408.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a self number, because there is not a number n which added to its sum of digits gives 804640804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (804640801) by changing a digit.

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, 153759 + ... + 158905.

It is an arithmetic number, because the mean of its divisors is an integer number (23963940).

Almost surely, 2^804640804 is an apocalyptic number.

It is an amenable number.

804640804 is an abundant number, since it is smaller than the sum of its proper divisors (920762876).

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

804640804 is a wasteful number, since it uses less digits than its factorization.

804640804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5209 (or 5196 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 34.

The square root of 804640804 is about 28366.1912141902. The cubic root of 804640804 is about 930.1093654866.

The spelling of 804640804 in words is "eight hundred four million, six hundred forty thousand, eight hundred four".