87167863 has 4 divisors (see below), whose sum is σ = 87542208. Its totient is φ = 86793520.

The previous prime is 87167851. The next prime is 87167867. The reversal of 87167863 is 36876178.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36876178 = 2 ⋅18438089.

It is a cyclic number.

It is not a de Polignac number, because 87167863 - 2¹⁷ = 87036791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87167867) 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, 186823 + ... + 187288.

It is an arithmetic number, because the mean of its divisors is an integer number (21885552).

Almost surely, 2^87167863 is an apocalyptic number.

87167863 is a deficient number, since it is larger than the sum of its proper divisors (374345).

87167863 is a wasteful number, since it uses less digits than its factorization.

87167863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374344.

The product of its digits is 338688, while the sum is 46.

The square root of 87167863 is about 9336.3731180796. The cubic root of 87167863 is about 443.3895633479.

The spelling of 87167863 in words is "eighty-seven million, one hundred sixty-seven thousand, eight hundred sixty-three".