8686837881 has 12 divisors (see below), whose sum is σ = 12548601520. Its totient is φ = 5790788280.

The previous prime is 8686837877. The next prime is 8686837903. The reversal of 8686837881 is 1887386868.

It is not a de Polignac number, because 8686837881 - 2² = 8686837877 is a prime.

It is a super-2 number, since 2×8686837881² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8686837781) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129066 + ... + 184476.

Almost surely, 2^8686837881 is an apocalyptic number.

It is an amenable number.

8686837881 is a deficient number, since it is larger than the sum of its proper divisors (3861763639).

8686837881 is a wasteful number, since it uses less digits than its factorization.

8686837881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72836 (or 72833 counting only the distinct ones).

The product of its digits is 24772608, while the sum is 63.

The square root of 8686837881 is about 93203.2074609023. The cubic root of 8686837881 is about 2055.6724025506.

The spelling of 8686837881 in words is "eight billion, six hundred eighty-six million, eight hundred thirty-seven thousand, eight hundred eighty-one".