6855940 has 48 divisors (see below), whose sum is σ = 17724672. Its totient is φ = 2169216.

The previous prime is 6855931. The next prime is 6855967. The reversal of 6855940 is 495586.

It is a self number, because there is not a number n which added to its sum of digits gives 6855940.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64 + ... + 3703.

It is an arithmetic number, because the mean of its divisors is an integer number (369264).

Almost surely, 2^6855940 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 6855940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8862336).

6855940 is an abundant number, since it is smaller than the sum of its proper divisors (10868732).

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

6855940 is a wasteful number, since it uses less digits than its factorization.

6855940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3796 (or 3794 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 6855940 is about 2618.3849984294. The cubic root of 6855940 is about 189.9717409495.

The spelling of 6855940 in words is "six million, eight hundred fifty-five thousand, nine hundred forty".