82085 has 4 divisors (see below), whose sum is σ = 98508. Its totient is φ = 65664.

The previous prime is 82073. The next prime is 82129. The reversal of 82085 is 58028.

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

It can be written as a sum of positive squares in 2 ways, for example, as 24964 + 57121 = 158^2 + 239^2 .

It is a cyclic number.

It is not a de Polignac number, because 82085 - 2⁶ = 82021 is a prime.

It is a Duffinian number.

It is a zygodrome in base 4.

It is a self number, because there is not a number n which added to its sum of digits gives 82085.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8204 + ... + 8213.

It is an arithmetic number, because the mean of its divisors is an integer number (24627).

2⁸²⁰⁸⁵ is an apocalyptic number.

It is an amenable number.

82085 is a deficient number, since it is larger than the sum of its proper divisors (16423).

82085 is a wasteful number, since it uses less digits than its factorization.

82085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16422.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 82085 is about 286.5047992617. The cubic root of 82085 is about 43.4598210936.

The spelling of 82085 in words is "eighty-two thousand, eighty-five".