87187 has 2 divisors, whose sum is σ = 87188. Its totient is φ = 87186.

The previous prime is 87181. The next prime is 87211. The reversal of 87187 is 78178.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87187 - 2³ = 87179 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43593 + 43594.

It is an arithmetic number, because the mean of its divisors is an integer number (43594).

2⁸⁷¹⁸⁷ is an apocalyptic number.

87187 is a deficient number, since it is larger than the sum of its proper divisors (1).

87187 is an equidigital number, since it uses as much as digits as its factorization.

87187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3136, while the sum is 31.

The square root of 87187 is about 295.2744486067. The cubic root of 87187 is about 44.3422008506.

Subtracting from 87187 its reverse (78178), we obtain a palindrome (9009).

The spelling of 87187 in words is "eighty-seven thousand, one hundred eighty-seven".