6400317 has 32 divisors (see below), whose sum is σ = 10782720. Its totient is φ = 3280320.

The previous prime is 6400259. The next prime is 6400349. The reversal of 6400317 is 7130046.

It is not a de Polignac number, because 6400317 - 2⁶ = 6400253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 6400293 and 6400302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6400357) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23659 + ... + 23927.

It is an arithmetic number, because the mean of its divisors is an integer number (336960).

Almost surely, 2^6400317 is an apocalyptic number.

It is an amenable number.

6400317 is a deficient number, since it is larger than the sum of its proper divisors (4382403).

6400317 is a wasteful number, since it uses less digits than its factorization.

6400317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 6400317 is about 2529.8847799850. The cubic root of 6400317 is about 185.6666186765. Note that the first 4 decimals are identical.

The spelling of 6400317 in words is "six million, four hundred thousand, three hundred seventeen".