804375621 has 72 divisors (see below), whose sum is σ = 1506660480. Its totient is φ = 409764096.

The previous prime is 804375617. The next prime is 804375643. The reversal of 804375621 is 126573408.

It is not a de Polignac number, because 804375621 - 2² = 804375617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (804375601) 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 71 ways as a sum of consecutive naturals, for example, 139620 + ... + 145266.

It is an arithmetic number, because the mean of its divisors is an integer number (20925840).

Almost surely, 2^804375621 is an apocalyptic number.

It is an amenable number.

804375621 is a deficient number, since it is larger than the sum of its proper divisors (702284859).

804375621 is a wasteful number, since it uses less digits than its factorization.

804375621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5703 (or 5693 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 804375621 is about 28361.5165497193. The cubic root of 804375621 is about 930.0071764968.

The spelling of 804375621 in words is "eight hundred four million, three hundred seventy-five thousand, six hundred twenty-one".