6400475 has 6 divisors (see below), whose sum is σ = 7936620. Its totient is φ = 5120360.

The previous prime is 6400453. The next prime is 6400489. The reversal of 6400475 is 5740046.

It is not a de Polignac number, because 6400475 - 2⁶ = 6400411 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 127985 + ... + 128034.

It is an arithmetic number, because the mean of its divisors is an integer number (1322770).

Almost surely, 2^6400475 is an apocalyptic number.

6400475 is a deficient number, since it is larger than the sum of its proper divisors (1536145).

6400475 is a wasteful number, since it uses less digits than its factorization.

6400475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256029 (or 256024 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 6400475 is about 2529.9160065109. The cubic root of 6400475 is about 185.6681464698.

The spelling of 6400475 in words is "six million, four hundred thousand, four hundred seventy-five".