6853686 has 64 divisors (see below), whose sum is σ = 17210880. Its totient is φ = 1774080.

The previous prime is 6853667. The next prime is 6853709. The reversal of 6853686 is 6863586.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20541 + ... + 20871.

It is an arithmetic number, because the mean of its divisors is an integer number (268920).

Almost surely, 2^6853686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6853686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8605440).

6853686 is an abundant number, since it is smaller than the sum of its proper divisors (10357194).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6853686 is a wasteful number, since it uses less digits than its factorization.

6853686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389.

The product of its digits is 207360, while the sum is 42.

The square root of 6853686 is about 2617.9545450599. The cubic root of 6853686 is about 189.9509199176.

It can be divided in two parts, 685 and 3686, that added together give a triangular number (4371 = T₉₃).

The spelling of 6853686 in words is "six million, eight hundred fifty-three thousand, six hundred eighty-six".