6813879 has 8 divisors (see below), whose sum is σ = 9098112. Its totient is φ = 4536120.

The previous prime is 6813857. The next prime is 6813881. The reversal of 6813879 is 9783186.

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

It is not a de Polignac number, because 6813879 - 2⁵ = 6813847 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6813879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6813899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1992 + ... + 4194.

It is an arithmetic number, because the mean of its divisors is an integer number (1137264).

Almost surely, 2^6813879 is an apocalyptic number.

6813879 is a deficient number, since it is larger than the sum of its proper divisors (2284233).

6813879 is a wasteful number, since it uses less digits than its factorization.

6813879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3237.

The product of its digits is 72576, while the sum is 42.

The square root of 6813879 is about 2610.3407823501. The cubic root of 6813879 is about 189.5824533335.

It can be divided in two parts, 681 and 3879, that added together give a triangular number (4560 = T₉₅).

The spelling of 6813879 in words is "six million, eight hundred thirteen thousand, eight hundred seventy-nine".