6388679 has 12 divisors (see below), whose sum is σ = 7217112. Its totient is φ = 5646960.

The previous prime is 6388667. The next prime is 6388691. The reversal of 6388679 is 9768836.

It is an interprime number because it is at equal distance from previous prime (6388667) and next prime (6388691).

It is not a de Polignac number, because 6388679 - 2²⁰ = 5340103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6388619) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3764 + ... + 5190.

It is an arithmetic number, because the mean of its divisors is an integer number (601426).

Almost surely, 2^6388679 is an apocalyptic number.

6388679 is a deficient number, since it is larger than the sum of its proper divisors (828433).

6388679 is a wasteful number, since it uses less digits than its factorization.

6388679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1486 (or 1475 counting only the distinct ones).

The product of its digits is 435456, while the sum is 47.

The square root of 6388679 is about 2527.5836286857. The cubic root of 6388679 is about 185.5540149247.

The spelling of 6388679 in words is "six million, three hundred eighty-eight thousand, six hundred seventy-nine".