99586 has 16 divisors (see below), whose sum is σ = 165240. Its totient is φ = 44800.

The previous prime is 99581. The next prime is 99607. The reversal of 99586 is 68599.

99586 = 44² + 45² + ... + 72².

It can be written as a sum of positive squares in 4 ways, for example, as 99225 + 361 = 315^2 + 19^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (99581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 936 + ... + 1036.

2⁹⁹⁵⁸⁶ is an apocalyptic number.

99586 is a deficient number, since it is larger than the sum of its proper divisors (65654).

99586 is a wasteful number, since it uses less digits than its factorization.

99586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149.

The product of its digits is 19440, while the sum is 37.

The square root of 99586 is about 315.5724956329. The cubic root of 99586 is about 46.3517458119.

It can be divided in two parts, 995 and 86, that added together give a triangular number (1081 = T₄₆).

The spelling of 99586 in words is "ninety-nine thousand, five hundred eighty-six".