90686 has 4 divisors (see below), whose sum is σ = 136032. Its totient is φ = 45342.

The previous prime is 90679. The next prime is 90697. The reversal of 90686 is 68609.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22670 + ... + 22673.

It is an arithmetic number, because the mean of its divisors is an integer number (34008).

2⁹⁰⁶⁸⁶ is an apocalyptic number.

90686 is a deficient number, since it is larger than the sum of its proper divisors (45346).

90686 is a wasteful number, since it uses less digits than its factorization.

90686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45345.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 90686 is about 301.1411629120. The cubic root of 90686 is about 44.9276202696.

The spelling of 90686 in words is "ninety thousand, six hundred eighty-six".