86664863 has 4 divisors (see below), whose sum is σ = 86688888. Its totient is φ = 86640840.

The previous prime is 86664859. The next prime is 86664881. The reversal of 86664863 is 36846668.

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 86664863 - 2² = 86664859 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 (86664883) 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, 5381 + ... + 14222.

It is an arithmetic number, because the mean of its divisors is an integer number (21672222).

Almost surely, 2^86664863 is an apocalyptic number.

86664863 is a deficient number, since it is larger than the sum of its proper divisors (24025).

86664863 is a wasteful number, since it uses less digits than its factorization.

86664863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24024.

The product of its digits is 995328, while the sum is 47.

The square root of 86664863 is about 9309.3964895690. The cubic root of 86664863 is about 442.5350614328.

The spelling of 86664863 in words is "eighty-six million, six hundred sixty-four thousand, eight hundred sixty-three".