8664581136 has 20 divisors (see below), whose sum is σ = 22383501392. Its totient is φ = 2888193696.

The previous prime is 8664581129. The next prime is 8664581143. The reversal of 8664581136 is 6311854668.

It is an interprime number because it is at equal distance from previous prime (8664581129) and next prime (8664581143).

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 180512107 = 8664581136 / (8 + 6 + 6 + 4 + 5 + 8 + 1 + 1 + 3 + 6).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90256006 + ... + 90256101.

Almost surely, 2^8664581136 is an apocalyptic number.

It is an amenable number.

8664581136 is an abundant number, since it is smaller than the sum of its proper divisors (13718920256).

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

8664581136 is a wasteful number, since it uses less digits than its factorization.

8664581136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180512118 (or 180512112 counting only the distinct ones).

The product of its digits is 829440, while the sum is 48.

The square root of 8664581136 is about 93083.7318547124. The cubic root of 8664581136 is about 2053.9152726882.

The spelling of 8664581136 in words is "eight billion, six hundred sixty-four million, five hundred eighty-one thousand, one hundred thirty-six".