6881345 has 16 divisors (see below), whose sum is σ = 8871120. Its totient is φ = 5105664.

The previous prime is 6881341. The next prime is 6881351. The reversal of 6881345 is 5431886.

It can be written as a sum of positive squares in 8 ways, for example, as 322624 + 6558721 = 568^2 + 2561^2 .

It is a cyclic number.

It is not a de Polignac number, because 6881345 - 2² = 6881341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6881341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5651 + ... + 6759.

It is an arithmetic number, because the mean of its divisors is an integer number (554445).

Almost surely, 2^6881345 is an apocalyptic number.

It is an amenable number.

6881345 is a deficient number, since it is larger than the sum of its proper divisors (1989775).

6881345 is a wasteful number, since it uses less digits than its factorization.

6881345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204.

The product of its digits is 23040, while the sum is 35.

The square root of 6881345 is about 2623.2317854128. The cubic root of 6881345 is about 190.2061013750.

The spelling of 6881345 in words is "six million, eight hundred eighty-one thousand, three hundred forty-five".