6881838 has 64 divisors (see below), whose sum is σ = 15863040. Its totient is φ = 1976832.

The previous prime is 6881803. The next prime is 6881839. The reversal of 6881838 is 8381886.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6881838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6881839) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102681 + ... + 102747.

It is an arithmetic number, because the mean of its divisors is an integer number (247860).

Almost surely, 2^6881838 is an apocalyptic number.

6881838 is an abundant number, since it is smaller than the sum of its proper divisors (8981202).

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

6881838 is a wasteful number, since it uses less digits than its factorization.

6881838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161.

The product of its digits is 73728, while the sum is 42.

The square root of 6881838 is about 2623.3257517891. The cubic root of 6881838 is about 190.2106435766.

The spelling of 6881838 in words is "six million, eight hundred eighty-one thousand, eight hundred thirty-eight".