6856679936 has 40 divisors (see below), whose sum is σ = 14034156444. Its totient is φ = 3344711680.

The previous prime is 6856679917. The next prime is 6856679959. The reversal of 6856679936 is 6399766586.

It can be written as a sum of positive squares in 2 ways, for example, as 6766049536 + 90630400 = 82256^2 + 9520^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142325 + ... + 184308.

Almost surely, 2^6856679936 is an apocalyptic number.

It is an amenable number.

6856679936 is an abundant number, since it is smaller than the sum of its proper divisors (7177476508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6856679936 is an equidigital number, since it uses as much as digits as its factorization.

6856679936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326692 (or 326676 counting only the distinct ones).

The product of its digits is 88179840, while the sum is 65.

The square root of 6856679936 is about 82805.0719219542. The cubic root of 6856679936 is about 1899.7857501720.

The spelling of 6856679936 in words is "six billion, eight hundred fifty-six million, six hundred seventy-nine thousand, nine hundred thirty-six".