8787705990 has 128 divisors (see below), whose sum is σ = 24437541888. Its totient is φ = 1980940800.

The previous prime is 8787705937. The next prime is 8787706027. The reversal of 8787705990 is 995077878.

It is a congruent number.

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 63 ways as a sum of consecutive naturals, for example, 6722917 + ... + 6724223.

It is an arithmetic number, because the mean of its divisors is an integer number (190918296).

Almost surely, 2^8787705990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8787705990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12218770944).

8787705990 is an abundant number, since it is smaller than the sum of its proper divisors (15649835898).

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

8787705990 is a wasteful number, since it uses less digits than its factorization.

8787705990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1742.

The product of its (nonzero) digits is 8890560, while the sum is 60.

The square root of 8787705990 is about 93742.7650008255. The cubic root of 8787705990 is about 2063.5983539005.

The spelling of 8787705990 in words is "eight billion, seven hundred eighty-seven million, seven hundred five thousand, nine hundred ninety".