87116187 has 8 divisors (see below), whose sum is σ = 116199936. Its totient is φ = 58054952.

The previous prime is 87116149. The next prime is 87116189. The reversal of 87116187 is 78161178.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87116187 - 2⁶ = 87116123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87116189) 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, 8398 + ... + 15644.

It is an arithmetic number, because the mean of its divisors is an integer number (14524992).

Almost surely, 2^87116187 is an apocalyptic number.

87116187 is a deficient number, since it is larger than the sum of its proper divisors (29083749).

87116187 is a wasteful number, since it uses less digits than its factorization.

87116187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11257.

The product of its digits is 18816, while the sum is 39.

The square root of 87116187 is about 9333.6052519913. The cubic root of 87116187 is about 443.3019273485.

The spelling of 87116187 in words is "eighty-seven million, one hundred sixteen thousand, one hundred eighty-seven".