86971863 has 16 divisors (see below), whose sum is σ = 127670400. Its totient is φ = 52224480.

The previous prime is 86971853. The next prime is 86971889. The reversal of 86971863 is 36817968.

It is not a de Polignac number, because 86971863 - 2⁵ = 86971831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86971823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8493 + ... + 15686.

It is an arithmetic number, because the mean of its divisors is an integer number (7979400).

Almost surely, 2^86971863 is an apocalyptic number.

86971863 is a deficient number, since it is larger than the sum of its proper divisors (40698537).

86971863 is a wasteful number, since it uses less digits than its factorization.

86971863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24302.

The product of its digits is 435456, while the sum is 48.

The square root of 86971863 is about 9325.8706295981. The cubic root of 86971863 is about 443.0569882881.

The spelling of 86971863 in words is "eighty-six million, nine hundred seventy-one thousand, eight hundred sixty-three".