6887044881 has 24 divisors (see below), whose sum is σ = 9987278184. Its totient is φ = 4573255680.

The previous prime is 6887044877. The next prime is 6887044883. The reversal of 6887044881 is 1884407886.

It can be written as a sum of positive squares in 4 ways, for example, as 104040000 + 6783004881 = 10200^2 + 82359^2 .

It is not a de Polignac number, because 6887044881 - 2² = 6887044877 is a prime.

It is a super-2 number, since 2×6887044881² = 94862774385816608322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6887044883) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2891311 + ... + 2893691.

It is an arithmetic number, because the mean of its divisors is an integer number (416136591).

Almost surely, 2^6887044881 is an apocalyptic number.

It is an amenable number.

6887044881 is a deficient number, since it is larger than the sum of its proper divisors (3100233303).

6887044881 is a wasteful number, since it uses less digits than its factorization.

6887044881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3521 (or 3518 counting only the distinct ones).

The product of its (nonzero) digits is 2752512, while the sum is 54.

The square root of 6887044881 is about 82988.2213389346. The cubic root of 6887044881 is about 1902.5860336617.

The spelling of 6887044881 in words is "six billion, eight hundred eighty-seven million, forty-four thousand, eight hundred eighty-one".