86519863 has 4 divisors (see below), whose sum is σ = 91073560. Its totient is φ = 81966168.

The previous prime is 86519831. The next prime is 86519869. The reversal of 86519863 is 36891568.

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 86519863 - 2⁵ = 86519831 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 (86519869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2276820 + ... + 2276857.

It is an arithmetic number, because the mean of its divisors is an integer number (22768390).

Almost surely, 2^86519863 is an apocalyptic number.

86519863 is a deficient number, since it is larger than the sum of its proper divisors (4553697).

86519863 is a wasteful number, since it uses less digits than its factorization.

86519863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4553696.

The product of its digits is 311040, while the sum is 46.

The square root of 86519863 is about 9301.6053990696. The cubic root of 86519863 is about 442.2881201255.

The spelling of 86519863 in words is "eighty-six million, five hundred nineteen thousand, eight hundred sixty-three".