8621881860 has 96 divisors (see below), whose sum is σ = 24433234560. Its totient is φ = 2271449088.

The previous prime is 8621881837. The next prime is 8621881889. The reversal of 8621881860 is 681881268.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4823887 + ... + 4825673.

It is an arithmetic number, because the mean of its divisors is an integer number (254512860).

Almost surely, 2^8621881860 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 8621881860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12216617280).

8621881860 is an abundant number, since it is smaller than the sum of its proper divisors (15811352700).

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

8621881860 is a wasteful number, since it uses less digits than its factorization.

8621881860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2725 (or 2723 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 48.

The square root of 8621881860 is about 92854.0890860494. The cubic root of 8621881860 is about 2050.5357996666.

The spelling of 8621881860 in words is "eight billion, six hundred twenty-one million, eight hundred eighty-one thousand, eight hundred sixty".