87118185 has 48 divisors (see below), whose sum is σ = 175125888. Its totient is φ = 36199680.

The previous prime is 87118151. The next prime is 87118189. The reversal of 87118185 is 58181178.

It is not a de Polignac number, because 87118185 - 2¹⁶ = 87052649 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (87118189) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9277 + ... + 16133.

It is an arithmetic number, because the mean of its divisors is an integer number (3648456).

Almost surely, 2^87118185 is an apocalyptic number.

It is an amenable number.

87118185 is an abundant number, since it is smaller than the sum of its proper divisors (88007703).

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

87118185 is a wasteful number, since it uses less digits than its factorization.

87118185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6894 (or 6883 counting only the distinct ones).

The product of its digits is 17920, while the sum is 39.

The square root of 87118185 is about 9333.7122839736. The cubic root of 87118185 is about 443.3053163493.

The spelling of 87118185 in words is "eighty-seven million, one hundred eighteen thousand, one hundred eighty-five".