87911616 has 56 divisors (see below), whose sum is σ = 250498864. Its totient is φ = 27048960.

The previous prime is 87911591. The next prime is 87911617. The reversal of 87911616 is 61611978.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (87911617) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 15115 + ... + 20106.

It is an arithmetic number, because the mean of its divisors is an integer number (4473194).

Almost surely, 2^87911616 is an apocalyptic number.

It is an amenable number.

87911616 is an abundant number, since it is smaller than the sum of its proper divisors (162587248).

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

87911616 is a wasteful number, since it uses less digits than its factorization.

87911616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35249 (or 35239 counting only the distinct ones).

The product of its digits is 18144, while the sum is 39.

The square root of 87911616 is about 9376.1194531640. The cubic root of 87911616 is about 444.6470559166.

The spelling of 87911616 in words is "eighty-seven million, nine hundred eleven thousand, six hundred sixteen".