87170163 has 4 divisors (see below), whose sum is σ = 116226888. Its totient is φ = 58113440.

The previous prime is 87170147. The next prime is 87170177. The reversal of 87170163 is 36107178.

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 87170163 - 2⁴ = 87170147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87170123) 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 3 ways as a sum of consecutive naturals, for example, 14528358 + ... + 14528363.

It is an arithmetic number, because the mean of its divisors is an integer number (29056722).

Almost surely, 2^87170163 is an apocalyptic number.

87170163 is a deficient number, since it is larger than the sum of its proper divisors (29056725).

87170163 is a wasteful number, since it uses less digits than its factorization.

87170163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29056724.

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 87170163 is about 9336.4962914361. The cubic root of 87170163 is about 443.3934630535.

The spelling of 87170163 in words is "eighty-seven million, one hundred seventy thousand, one hundred sixty-three".