6400804 has 6 divisors (see below), whose sum is σ = 11201414. Its totient is φ = 3200400.

The previous prime is 6400799. The next prime is 6400813. The reversal of 6400804 is 4080046.

It can be written as a sum of positive squares in only one way, i.e., 6200100 + 200704 = 2490^2 + 448^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800097 + ... + 800104.

Almost surely, 2^6400804 is an apocalyptic number.

It is an amenable number.

6400804 is a deficient number, since it is larger than the sum of its proper divisors (4800610).

6400804 is a wasteful number, since it uses less digits than its factorization.

6400804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600205 (or 1600203 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 6400804 is about 2529.9810275968. The cubic root of 6400804 is about 185.6713276803.

The spelling of 6400804 in words is "six million, four hundred thousand, eight hundred four".