6856775 has 6 divisors (see below), whose sum is σ = 8502432. Its totient is φ = 5485400.

The previous prime is 6856771. The next prime is 6856781. The reversal of 6856775 is 5776586.

6856775 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6856775 - 2² = 6856771 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6856771) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 137111 + ... + 137160.

It is an arithmetic number, because the mean of its divisors is an integer number (1417072).

Almost surely, 2^6856775 is an apocalyptic number.

6856775 is a deficient number, since it is larger than the sum of its proper divisors (1645657).

6856775 is a wasteful number, since it uses less digits than its factorization.

6856775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274281 (or 274276 counting only the distinct ones).

The product of its digits is 352800, while the sum is 44.

The square root of 6856775 is about 2618.5444430065. The cubic root of 6856775 is about 189.9794529951.

The spelling of 6856775 in words is "six million, eight hundred fifty-six thousand, seven hundred seventy-five".