6855856 has 40 divisors (see below), whose sum is σ = 15561504. Its totient is φ = 2864640.

The previous prime is 6855829. The next prime is 6855869. The reversal of 6855856 is 6585586.

It is a super-2 number, since 2×6855856² = 94005522985472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3846 + ... + 5338.

Almost surely, 2^6855856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6855856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7780752).

6855856 is an abundant number, since it is smaller than the sum of its proper divisors (8705648).

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

6855856 is a wasteful number, since it uses less digits than its factorization.

6855856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1549 (or 1543 counting only the distinct ones).

The product of its digits is 288000, while the sum is 43.

The square root of 6855856 is about 2618.3689579584. The cubic root of 6855856 is about 189.9709650923.

The spelling of 6855856 in words is "six million, eight hundred fifty-five thousand, eight hundred fifty-six".