86994863 has 12 divisors (see below), whose sum is σ = 92537280. Its totient is φ = 81768096.

The previous prime is 86994847. The next prime is 86994883. The reversal of 86994863 is 36849968.

It is not a de Polignac number, because 86994863 - 2⁴ = 86994847 is a prime.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86994833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48578 + ... + 50336.

It is an arithmetic number, because the mean of its divisors is an integer number (7711440).

Almost surely, 2^86994863 is an apocalyptic number.

86994863 is a deficient number, since it is larger than the sum of its proper divisors (5542417).

86994863 is a wasteful number, since it uses less digits than its factorization.

86994863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1934 (or 1915 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 53.

The square root of 86994863 is about 9327.1036769192. The cubic root of 86994863 is about 443.0960408132.

The spelling of 86994863 in words is "eighty-six million, nine hundred ninety-four thousand, eight hundred sixty-three".