6404036 has 24 divisors (see below), whose sum is σ = 12161016. Its totient is φ = 2938880.

The previous prime is 6404023. The next prime is 6404059. The reversal of 6404036 is 6304046.

It can be written as a sum of positive squares in 4 ways, for example, as 372100 + 6031936 = 610^2 + 2456^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1640 + ... + 3936.

It is an arithmetic number, because the mean of its divisors is an integer number (506709).

Almost surely, 2^6404036 is an apocalyptic number.

It is an amenable number.

6404036 is a deficient number, since it is larger than the sum of its proper divisors (5756980).

6404036 is a wasteful number, since it uses less digits than its factorization.

6404036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2359 (or 2357 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 6404036 is about 2530.6196869542. The cubic root of 6404036 is about 185.7025731695.

The spelling of 6404036 in words is "six million, four hundred four thousand, thirty-six".