86381863 has 2 divisors, whose sum is σ = 86381864. Its totient is φ = 86381862.

The previous prime is 86381861. The next prime is 86381873. The reversal of 86381863 is 36818368.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86381863 - 2¹ = 86381861 is a prime.

Together with 86381861, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86381861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43190931 + 43190932.

It is an arithmetic number, because the mean of its divisors is an integer number (43190932).

Almost surely, 2^86381863 is an apocalyptic number.

86381863 is a deficient number, since it is larger than the sum of its proper divisors (1).

86381863 is an equidigital number, since it uses as much as digits as its factorization.

86381863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 43.

The square root of 86381863 is about 9294.1843644292. The cubic root of 86381863 is about 442.0528437465.

It can be divided in two parts, 8638 and 1863, that added together give a palindrome (10501).

The spelling of 86381863 in words is "eighty-six million, three hundred eighty-one thousand, eight hundred sixty-three".