6855686 has 4 divisors (see below), whose sum is σ = 10283532. Its totient is φ = 3427842.

The previous prime is 6855683. The next prime is 6855691. The reversal of 6855686 is 6865586.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6855683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1713920 + ... + 1713923.

It is an arithmetic number, because the mean of its divisors is an integer number (2570883).

Almost surely, 2^6855686 is an apocalyptic number.

6855686 is a deficient number, since it is larger than the sum of its proper divisors (3427846).

6855686 is a wasteful number, since it uses less digits than its factorization.

6855686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3427845.

The product of its digits is 345600, while the sum is 44.

The square root of 6855686 is about 2618.3364947997. The cubic root of 6855686 is about 189.9693948857.

The spelling of 6855686 in words is "six million, eight hundred fifty-five thousand, six hundred eighty-six".