86987750720 has 56 divisors (see below), whose sum is σ = 223073406024. Its totient is φ = 32118552576.

The previous prime is 86987750701. The next prime is 86987750753. The reversal of 86987750720 is 2705778968.

It can be written as a sum of positive squares in 4 ways, for example, as 14557870336 + 72429880384 = 120656^2 + 269128^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 86987750720.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10451099 + ... + 10459418.

It is an arithmetic number, because the mean of its divisors is an integer number (3983453679).

Almost surely, 2^86987750720 is an apocalyptic number.

86987750720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

86987750720 is an abundant number, since it is smaller than the sum of its proper divisors (136085655304).

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

86987750720 is a wasteful number, since it uses less digits than its factorization.

86987750720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20910547 (or 20910537 counting only the distinct ones).

The product of its (nonzero) digits is 11854080, while the sum is 59.

The spelling of 86987750720 in words is "eighty-six billion, nine hundred eighty-seven million, seven hundred fifty thousand, seven hundred twenty".