82166 has 8 divisors (see below), whose sum is σ = 140880. Its totient is φ = 35208.

The previous prime is 82163. The next prime is 82171. The reversal of 82166 is 66128.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2921 + ... + 2948.

It is an arithmetic number, because the mean of its divisors is an integer number (17610).

2⁸²¹⁶⁶ is an apocalyptic number.

82166 is a deficient number, since it is larger than the sum of its proper divisors (58714).

82166 is a wasteful number, since it uses less digits than its factorization.

82166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5878.

The product of its digits is 576, while the sum is 23.

The square root of 82166 is about 286.6461232949. The cubic root of 82166 is about 43.4741115171.

The spelling of 82166 in words is "eighty-two thousand, one hundred sixty-six".