87163 has 4 divisors (see below), whose sum is σ = 88128. Its totient is φ = 86200.

The previous prime is 87151. The next prime is 87179. The reversal of 87163 is 36178.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 36178 = 2 ⋅18089.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87103) 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, 331 + ... + 532.

It is an arithmetic number, because the mean of its divisors is an integer number (22032).

2⁸⁷¹⁶³ is an apocalyptic number.

87163 is a deficient number, since it is larger than the sum of its proper divisors (965).

87163 is a wasteful number, since it uses less digits than its factorization.

87163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964.

The product of its digits is 1008, while the sum is 25.

The square root of 87163 is about 295.2338056524. The cubic root of 87163 is about 44.3381317788.

The spelling of 87163 in words is "eighty-seven thousand, one hundred sixty-three".