87718512 has 80 divisors (see below), whose sum is σ = 262697472. Its totient is φ = 24702720.

The previous prime is 87718507. The next prime is 87718529. The reversal of 87718512 is 21581778.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22018 + ... + 25694.

Almost surely, 2^87718512 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 87718512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131348736).

87718512 is an abundant number, since it is smaller than the sum of its proper divisors (174978960).

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

87718512 is a wasteful number, since it uses less digits than its factorization.

87718512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3766 (or 3760 counting only the distinct ones).

The product of its digits is 31360, while the sum is 39.

The square root of 87718512 is about 9365.8161416932. The cubic root of 87718512 is about 444.3212511521.

The spelling of 87718512 in words is "eighty-seven million, seven hundred eighteen thousand, five hundred twelve".