6864685 has 8 divisors (see below), whose sum is σ = 8722296. Its totient is φ = 5168640.

The previous prime is 6864661. The next prime is 6864691. The reversal of 6864685 is 5864686.

It can be written as a sum of positive squares in 4 ways, for example, as 724201 + 6140484 = 851^2 + 2478^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6864685 - 2⁵ = 6864653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40296 + ... + 40465.

It is an arithmetic number, because the mean of its divisors is an integer number (1090287).

Almost surely, 2^6864685 is an apocalyptic number.

It is an amenable number.

6864685 is a deficient number, since it is larger than the sum of its proper divisors (1857611).

6864685 is a wasteful number, since it uses less digits than its factorization.

6864685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80783.

The product of its digits is 276480, while the sum is 43.

The square root of 6864685 is about 2620.0543887484. The cubic root of 6864685 is about 190.0524785787.

Subtracting from 6864685 its reverse (5864686), we obtain a palindrome (999999).

The spelling of 6864685 in words is "six million, eight hundred sixty-four thousand, six hundred eighty-five".