6857866 has 8 divisors (see below), whose sum is σ = 10330560. Its totient is φ = 3414348.

The previous prime is 6857849. The next prime is 6857881. The reversal of 6857866 is 6687586.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6696 + ... + 7651.

It is an arithmetic number, because the mean of its divisors is an integer number (1291320).

Almost surely, 2^6857866 is an apocalyptic number.

6857866 is a deficient number, since it is larger than the sum of its proper divisors (3472694).

6857866 is a wasteful number, since it uses less digits than its factorization.

6857866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14588.

The product of its digits is 483840, while the sum is 46.

The square root of 6857866 is about 2618.7527565618. The cubic root of 6857866 is about 189.9895285088.

It can be divided in two parts, 68578 and 66, that added together give a square (68644 = 262²).

The spelling of 6857866 in words is "six million, eight hundred fifty-seven thousand, eight hundred sixty-six".