87118863 has 32 divisors (see below), whose sum is σ = 133866432. Its totient is φ = 49920000.

The previous prime is 87118847. The next prime is 87118879. The reversal of 87118863 is 36881178.

It is an interprime number because it is at equal distance from previous prime (87118847) and next prime (87118879).

It is not a de Polignac number, because 87118863 - 2⁴ = 87118847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87118663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66313 + ... + 67613.

It is an arithmetic number, because the mean of its divisors is an integer number (4183326).

Almost surely, 2^87118863 is an apocalyptic number.

87118863 is a deficient number, since it is larger than the sum of its proper divisors (46747569).

87118863 is a wasteful number, since it uses less digits than its factorization.

87118863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1435.

The product of its digits is 64512, while the sum is 42.

The square root of 87118863 is about 9333.7486038569. The cubic root of 87118863 is about 443.3064663588.

The spelling of 87118863 in words is "eighty-seven million, one hundred eighteen thousand, eight hundred sixty-three".