87687188856 has 96 divisors (see below), whose sum is σ = 247957650720. Its totient is φ = 27941760000.

The previous prime is 87687188767. The next prime is 87687188873. The reversal of 87687188856 is 65888178678.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2967756 + ... + 2997156.

It is an arithmetic number, because the mean of its divisors is an integer number (2582892195).

Almost surely, 2^87687188856 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 87687188856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123978825360).

87687188856 is an abundant number, since it is smaller than the sum of its proper divisors (160270461864).

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

87687188856 is a wasteful number, since it uses less digits than its factorization.

87687188856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31237 (or 31230 counting only the distinct ones).

The product of its digits is 289013760, while the sum is 72.

The spelling of 87687188856 in words is "eighty-seven billion, six hundred eighty-seven million, one hundred eighty-eight thousand, eight hundred fifty-six".