6881855 has 8 divisors (see below), whose sum is σ = 8744112. Its totient is φ = 5181568.

The previous prime is 6881851. The next prime is 6881869. The reversal of 6881855 is 5581886.

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

It is a cyclic number.

It is not a de Polignac number, because 6881855 - 2² = 6881851 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6881851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40397 + ... + 40566.

It is an arithmetic number, because the mean of its divisors is an integer number (1093014).

Almost surely, 2^6881855 is an apocalyptic number.

6881855 is a deficient number, since it is larger than the sum of its proper divisors (1862257).

6881855 is a wasteful number, since it uses less digits than its factorization.

6881855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80985.

The product of its digits is 76800, while the sum is 41.

The square root of 6881855 is about 2623.3289919490. The cubic root of 6881855 is about 190.2108002004.

The spelling of 6881855 in words is "six million, eight hundred eighty-one thousand, eight hundred fifty-five".