6404319 has 16 divisors (see below), whose sum is σ = 9544800. Its totient is φ = 4243968.

The previous prime is 6404317. The next prime is 6404341. The reversal of 6404319 is 9134046.

6404319 is a `hidden beast` number, since 640 + 4 + 3 + 19 = 666.

It is not a de Polignac number, because 6404319 - 2¹ = 6404317 is a prime.

It is a super-2 number, since 2×6404319² = 82030603707522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 6404292 and 6404301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6404317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4597 + ... + 5825.

It is an arithmetic number, because the mean of its divisors is an integer number (596550).

Almost surely, 2^6404319 is an apocalyptic number.

6404319 is a deficient number, since it is larger than the sum of its proper divisors (3140481).

6404319 is a wasteful number, since it uses less digits than its factorization.

6404319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431 (or 1425 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 6404319 is about 2530.6756014946. The cubic root of 6404319 is about 185.7053085827.

The spelling of 6404319 in words is "six million, four hundred four thousand, three hundred nineteen".