8761644332 has 72 divisors (see below), whose sum is σ = 18215505504. Its totient is φ = 3675479808.

The previous prime is 8761644329. The next prime is 8761644371. The reversal of 8761644332 is 2334461678.

It is a super-2 number, since 2×8761644332² (a number of 21 digits) contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 6408713 + ... + 6410079.

It is an arithmetic number, because the mean of its divisors is an integer number (252993132).

Almost surely, 2^8761644332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8761644332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9107752752).

8761644332 is an abundant number, since it is smaller than the sum of its proper divisors (9453861172).

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

8761644332 is a wasteful number, since it uses less digits than its factorization.

8761644332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2055 (or 2046 counting only the distinct ones).

The product of its digits is 580608, while the sum is 44.

The square root of 8761644332 is about 93603.6555482744. The cubic root of 8761644332 is about 2061.5563326116.

The spelling of 8761644332 in words is "eight billion, seven hundred sixty-one million, six hundred forty-four thousand, three hundred thirty-two".