82866 has 16 divisors (see below), whose sum is σ = 189504. Its totient is φ = 23664.

The previous prime is 82847. The next prime is 82883. The reversal of 82866 is 66828.

It is an unprimeable number.

82866 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 945 + ... + 1028.

It is an arithmetic number, because the mean of its divisors is an integer number (11844).

2⁸²⁸⁶⁶ is an apocalyptic number.

82866 is an abundant number, since it is smaller than the sum of its proper divisors (106638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94752).

82866 is a wasteful number, since it uses less digits than its factorization.

82866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1985.

The product of its digits is 4608, while the sum is 30.

The square root of 82866 is about 287.8645514821. The cubic root of 82866 is about 43.5972194731.

The spelling of 82866 in words is "eighty-two thousand, eight hundred sixty-six".