8644661132 has 12 divisors (see below), whose sum is σ = 15152680200. Its totient is φ = 4315323936.

The previous prime is 8644661119. The next prime is 8644661141. The reversal of 8644661132 is 2311664468.

It is a happy number.

It is a super-2 number, since 2×8644661132² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8644661132.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1748882 + ... + 1753817.

It is an arithmetic number, because the mean of its divisors is an integer number (1262723350).

Almost surely, 2^8644661132 is an apocalyptic number.

It is an amenable number.

8644661132 is a deficient number, since it is larger than the sum of its proper divisors (6508019068).

8644661132 is a wasteful number, since it uses less digits than its factorization.

8644661132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3503320 (or 3503318 counting only the distinct ones).

The product of its digits is 165888, while the sum is 41.

The square root of 8644661132 is about 92976.6698263602. The cubic root of 8644661132 is about 2052.3400707681.

The spelling of 8644661132 in words is "eight billion, six hundred forty-four million, six hundred sixty-one thousand, one hundred thirty-two".