6856870 has 16 divisors (see below), whose sum is σ = 12433680. Its totient is φ = 2722464.

The previous prime is 6856841. The next prime is 6856873. The reversal of 6856870 is 786586.

6856870 = 576² + 577² + ... + 595².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6856873) 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, 1077 + ... + 3856.

It is an arithmetic number, because the mean of its divisors is an integer number (777105).

Almost surely, 2^6856870 is an apocalyptic number.

6856870 is a deficient number, since it is larger than the sum of its proper divisors (5576810).

6856870 is a wasteful number, since it uses less digits than its factorization.

6856870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5079.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 6856870 is about 2618.5625827923. The cubic root of 6856870 is about 189.9803303738.

The spelling of 6856870 in words is "six million, eight hundred fifty-six thousand, eight hundred seventy".