6400504 has 16 divisors (see below), whose sum is σ = 13092120. Its totient is φ = 2909280.

The previous prime is 6400489. The next prime is 6400531. The reversal of 6400504 is 4050046.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36279 + ... + 36454.

Almost surely, 2^6400504 is an apocalyptic number.

It is an amenable number.

6400504 is an abundant number, since it is smaller than the sum of its proper divisors (6691616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6400504 is a wasteful number, since it uses less digits than its factorization.

6400504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72750 (or 72746 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 6400504 is about 2529.9217379200. The cubic root of 6400504 is about 185.6684268849.

The spelling of 6400504 in words is "six million, four hundred thousand, five hundred four".