87712860 has 96 divisors (see below), whose sum is σ = 262688832. Its totient is φ = 21790720.

The previous prime is 87712847. The next prime is 87712879. The reversal of 87712860 is 6821778.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

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 31 ways as a sum of consecutive naturals, for example, 114880 + ... + 115640.

It is an arithmetic number, because the mean of its divisors is an integer number (2736342).

Almost surely, 2^87712860 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 87712860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131344416).

87712860 is an abundant number, since it is smaller than the sum of its proper divisors (174975972).

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

87712860 is a wasteful number, since it uses less digits than its factorization.

87712860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903 (or 901 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 39.

The square root of 87712860 is about 9365.5144012489. The cubic root of 87712860 is about 444.3117079075.

The spelling of 87712860 in words is "eighty-seven million, seven hundred twelve thousand, eight hundred sixty".