86188105 has 4 divisors (see below), whose sum is σ = 103425732. Its totient is φ = 68950480.

The previous prime is 86188073. The next prime is 86188111. The reversal of 86188105 is 50188168.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41512249 + 44675856 = 6443^2 + 6684^2 .

It is not a de Polignac number, because 86188105 - 2⁵ = 86188073 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8618806 + ... + 8618815.

It is an arithmetic number, because the mean of its divisors is an integer number (25856433).

Almost surely, 2^86188105 is an apocalyptic number.

It is an amenable number.

86188105 is a deficient number, since it is larger than the sum of its proper divisors (17237627).

86188105 is a wasteful number, since it uses less digits than its factorization.

86188105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17237626.

The product of its (nonzero) digits is 15360, while the sum is 37.

The square root of 86188105 is about 9283.7548976694. The cubic root of 86188105 is about 441.7220822046.

It can be divided in two parts, 86 and 188105, that added together give a triangular number (188191 = T₆₁₃).

The spelling of 86188105 in words is "eighty-six million, one hundred eighty-eight thousand, one hundred five".