8689559868 has 36 divisors (see below), whose sum is σ = 23962120728. Its totient is φ = 2633199840.

The previous prime is 8689559863. The next prime is 8689559899.

8689559868 is a `hidden beast` number, since 8 + 6 + 8 + 9 + 559 + 8 + 68 = 666.

8689559868 is nontrivially palindromic in base 10.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 8689559796 and 8689559805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8689559863) 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, 10971271 + ... + 10972062.

Almost surely, 2^8689559868 is an apocalyptic number.

It is an amenable number.

8689559868 is an abundant number, since it is smaller than the sum of its proper divisors (15272560860).

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

8689559868 is a wasteful number, since it uses less digits than its factorization.

8689559868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21943354 (or 21943349 counting only the distinct ones).

The product of its digits is 298598400, while the sum is 72.

The square root of 8689559868 is about 93217.8087491870. The cubic root of 8689559868 is about 2055.8870924562.

The spelling of 8689559868 in words is "eight billion, six hundred eighty-nine million, five hundred fifty-nine thousand, eight hundred sixty-eight".