165822 has 16 divisors (see below), whose sum is σ = 343440. Its totient is φ = 53312.

The previous prime is 165817. The next prime is 165829. The reversal of 165822 is 228561.

It is a junction number, because it is equal to n+sod(n) for n = 165792 and 165801.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 165822.

It is not an unprimeable number, because it can be changed into a prime (165829) by changing a digit.

165822 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303 + ... + 650.

It is an arithmetic number, because the mean of its divisors is an integer number (21465).

2¹⁶⁵⁸²² is an apocalyptic number.

165822 is an abundant number, since it is smaller than the sum of its proper divisors (177618).

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

165822 is a wasteful number, since it uses less digits than its factorization.

165822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987.

The product of its digits is 960, while the sum is 24.

The square root of 165822 is about 407.2124752509. The cubic root of 165822 is about 54.9389957219.

The spelling of 165822 in words is "one hundred sixty-five thousand, eight hundred twenty-two".