804800643 has 4 divisors (see below), whose sum is σ = 1073067528. Its totient is φ = 536533760.

The previous prime is 804800639. The next prime is 804800657. The reversal of 804800643 is 346008408.

804800643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 804800643 - 2² = 804800639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (804800443) 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, 134133438 + ... + 134133443.

It is an arithmetic number, because the mean of its divisors is an integer number (268266882).

Almost surely, 2^804800643 is an apocalyptic number.

804800643 is a deficient number, since it is larger than the sum of its proper divisors (268266885).

804800643 is a wasteful number, since it uses less digits than its factorization.

804800643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268266884.

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 804800643 is about 28369.0084951871. The cubic root of 804800643 is about 930.1709490350.

The spelling of 804800643 in words is "eight hundred four million, eight hundred thousand, six hundred forty-three".