86659191 has 12 divisors (see below), whose sum is σ = 125255832. Its totient is φ = 57735216.

The previous prime is 86659189. The next prime is 86659231. The reversal of 86659191 is 19195668.

It is not a de Polignac number, because 86659191 - 2¹ = 86659189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86659151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22585 + ... + 26141.

It is an arithmetic number, because the mean of its divisors is an integer number (10437986).

Almost surely, 2^86659191 is an apocalyptic number.

86659191 is a deficient number, since it is larger than the sum of its proper divisors (38596641).

86659191 is a wasteful number, since it uses less digits than its factorization.

86659191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6270 (or 6267 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 86659191 is about 9309.0918461470. The cubic root of 86659191 is about 442.5254069487.

The spelling of 86659191 in words is "eighty-six million, six hundred fifty-nine thousand, one hundred ninety-one".