90685 has 8 divisors (see below), whose sum is σ = 124416. Its totient is φ = 62160.

The previous prime is 90679. The next prime is 90697. The reversal of 90685 is 58609.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90685 - 2³ = 90677 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1261 + ... + 1330.

It is an arithmetic number, because the mean of its divisors is an integer number (15552).

2⁹⁰⁶⁸⁵ is an apocalyptic number.

It is an amenable number.

90685 is a deficient number, since it is larger than the sum of its proper divisors (33731).

90685 is a wasteful number, since it uses less digits than its factorization.

90685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2603.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 90685 is about 301.1395025565. The cubic root of 90685 is about 44.9274551291.

The spelling of 90685 in words is "ninety thousand, six hundred eighty-five".