6404975 has 6 divisors (see below), whose sum is σ = 7942200. Its totient is φ = 5123960.

The previous prime is 6404929. The next prime is 6404987. The reversal of 6404975 is 5794046.

6404975 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6404975 - 2⁸ = 6404719 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 128075 + ... + 128124.

It is an arithmetic number, because the mean of its divisors is an integer number (1323700).

Almost surely, 2^6404975 is an apocalyptic number.

6404975 is a deficient number, since it is larger than the sum of its proper divisors (1537225).

6404975 is a wasteful number, since it uses less digits than its factorization.

6404975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256209 (or 256204 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 6404975 is about 2530.8052078341. The cubic root of 6404975 is about 185.7116490186.

The spelling of 6404975 in words is "six million, four hundred four thousand, nine hundred seventy-five".