86986205 has 18 divisors (see below), whose sum is σ = 107980506. Its totient is φ = 67269888.

The previous prime is 86986187. The next prime is 86986219. The reversal of 86986205 is 50268968.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 6220036 + 80766169 = 2494^2 + 8987^2 .

It is not a de Polignac number, because 86986205 - 2²⁰ = 85937629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 896717 + ... + 896813.

It is an arithmetic number, because the mean of its divisors is an integer number (5998917).

Almost surely, 2^86986205 is an apocalyptic number.

It is an amenable number.

86986205 is a deficient number, since it is larger than the sum of its proper divisors (20994301).

86986205 is an frugal number, since it uses more digits than its factorization.

86986205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 86986205 is about 9326.6395341516. The cubic root of 86986205 is about 443.0813408923.

The spelling of 86986205 in words is "eighty-six million, nine hundred eighty-six thousand, two hundred five".