6881559 has 8 divisors (see below), whose sum is σ = 9192960. Its totient is φ = 4578936.

The previous prime is 6881551. The next prime is 6881579. The reversal of 6881559 is 9551886.

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

It is not a de Polignac number, because 6881559 - 2³ = 6881551 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 6881559.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6881551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69 + ... + 3710.

It is an arithmetic number, because the mean of its divisors is an integer number (1149120).

Almost surely, 2^6881559 is an apocalyptic number.

6881559 is a deficient number, since it is larger than the sum of its proper divisors (2311401).

6881559 is a wasteful number, since it uses less digits than its factorization.

6881559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4389.

The product of its digits is 86400, while the sum is 42.

The square root of 6881559 is about 2623.2725744764. The cubic root of 6881559 is about 190.2080730672.

The spelling of 6881559 in words is "six million, eight hundred eighty-one thousand, five hundred fifty-nine".