6856913 has 8 divisors (see below), whose sum is σ = 7996800. Its totient is φ = 5877060.

The previous prime is 6856901. The next prime is 6856919. The reversal of 6856913 is 3196586.

It is not a de Polignac number, because 6856913 - 2⁴ = 6856897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6856919) 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, 9653 + ... + 10338.

It is an arithmetic number, because the mean of its divisors is an integer number (999600).

Almost surely, 2^6856913 is an apocalyptic number.

It is an amenable number.

6856913 is a deficient number, since it is larger than the sum of its proper divisors (1139887).

6856913 is an equidigital number, since it uses as much as digits as its factorization.

6856913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20012 (or 19998 counting only the distinct ones).

The product of its digits is 38880, while the sum is 38.

The square root of 6856913 is about 2618.5707933909. The cubic root of 6856913 is about 189.9807275004.

The spelling of 6856913 in words is "six million, eight hundred fifty-six thousand, nine hundred thirteen".