822066 has 48 divisors (see below), whose sum is σ = 2017344. Its totient is φ = 218592.

The previous prime is 822049. The next prime is 822067. The reversal of 822066 is 660228.

It is not an unprimeable number, because it can be changed into a prime (822067) by changing a digit.

822066 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 23 ways as a sum of consecutive naturals, for example, 22200 + ... + 22236.

It is an arithmetic number, because the mean of its divisors is an integer number (42028).

2⁸²²⁰⁶⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 822066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1008672).

822066 is an abundant number, since it is smaller than the sum of its proper divisors (1195278).

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

822066 is a wasteful number, since it uses less digits than its factorization.

822066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95 (or 72 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 822066 is about 906.6785538436. The cubic root of 822066 is about 93.6775582600.

The spelling of 822066 in words is "eight hundred twenty-two thousand, sixty-six".