8636659968 has 36 divisors (see below), whose sum is σ = 22986112688. Its totient is φ = 2878886400.

The previous prime is 8636659943. The next prime is 8636659979. The reversal of 8636659968 is 8699566368.

It is a super-2 number, since 2×8636659968² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8636659899 and 8636659908.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5622058 + ... + 5623593.

Almost surely, 2^8636659968 is an apocalyptic number.

It is an amenable number.

8636659968 is an abundant number, since it is smaller than the sum of its proper divisors (14349452720).

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

8636659968 is a wasteful number, since it uses less digits than its factorization.

8636659968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11245670 (or 11245656 counting only the distinct ones).

The product of its digits is 100776960, while the sum is 66.

The square root of 8636659968 is about 92933.6320607346. The cubic root of 8636659968 is about 2051.7066864517.

The spelling of 8636659968 in words is "eight billion, six hundred thirty-six million, six hundred fifty-nine thousand, nine hundred sixty-eight".