87036187 has 4 divisors (see below), whose sum is σ = 99469936. Its totient is φ = 74602440.

The previous prime is 87036179. The next prime is 87036199. The reversal of 87036187 is 78163078.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87036187 - 2³ = 87036179 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87036137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6216864 + ... + 6216877.

It is an arithmetic number, because the mean of its divisors is an integer number (24867484).

Almost surely, 2^87036187 is an apocalyptic number.

87036187 is a deficient number, since it is larger than the sum of its proper divisors (12433749).

87036187 is a wasteful number, since it uses less digits than its factorization.

87036187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12433748.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 87036187 is about 9329.3186782315. The cubic root of 87036187 is about 443.1661890252.

The spelling of 87036187 in words is "eighty-seven million, thirty-six thousand, one hundred eighty-seven".