804055643 has 4 divisors (see below), whose sum is σ = 839014608. Its totient is φ = 769096680.

The previous prime is 804055639. The next prime is 804055687. The reversal of 804055643 is 346550408.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 804055643 - 2² = 804055639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (804058643) 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, 17479448 + ... + 17479493.

It is an arithmetic number, because the mean of its divisors is an integer number (209753652).

Almost surely, 2^804055643 is an apocalyptic number.

804055643 is a deficient number, since it is larger than the sum of its proper divisors (34958965).

804055643 is a wasteful number, since it uses less digits than its factorization.

804055643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34958964.

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 804055643 is about 28355.8749291924. The cubic root of 804055643 is about 929.8838422003.

The spelling of 804055643 in words is "eight hundred four million, fifty-five thousand, six hundred forty-three".