6856771 has 2 divisors, whose sum is σ = 6856772. Its totient is φ = 6856770.

The previous prime is 6856757. The next prime is 6856781. The reversal of 6856771 is 1776586.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6856771 - 2⁷ = 6856643 is a prime.

It is not a weakly prime, because it can be changed into another prime (6856781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3428385 + 3428386.

It is an arithmetic number, because the mean of its divisors is an integer number (3428386).

Almost surely, 2^6856771 is an apocalyptic number.

6856771 is a deficient number, since it is larger than the sum of its proper divisors (1).

6856771 is an equidigital number, since it uses as much as digits as its factorization.

6856771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 40.

The square root of 6856771 is about 2618.5436792232. The cubic root of 6856771 is about 189.9794160526.

The spelling of 6856771 in words is "six million, eight hundred fifty-six thousand, seven hundred seventy-one".