82643 has 6 divisors (see below), whose sum is σ = 90972.
Its totient is φ = 75020.
The previous prime is 82633. The next prime is 82651. The reversal of 82643 is 34628.
It is a happy number.
It is not a de Polignac number, because 82643 - 28 = 82387 is a prime.
It is a d-powerful number, because it can be written as 8 + 215 + 66 + 45 + 37 .
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (82613) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 221 + ... + 462.
It is an arithmetic number, because the mean of its divisors is an integer number (15162).
282643 is an apocalyptic number.
82643 is a deficient number, since it is larger than the sum of its proper divisors (8329).
82643 is a wasteful number, since it uses less digits than its factorization.
82643 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 705 (or 694 counting only the distinct ones).
The product of its digits is 1152, while the sum is 23.
The square root of 82643 is about 287.4769555982.
The cubic root of 82643 is about 43.5580763018.
The spelling of 82643 in words is "eighty-two thousand, six hundred forty-three".