165066 has 32 divisors (see below), whose sum is σ = 374976. Its totient is φ = 48000.

The previous prime is 165059. The next prime is 165079. The reversal of 165066 is 660561.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2676 + ... + 2736.

It is an arithmetic number, because the mean of its divisors is an integer number (11718).

2¹⁶⁵⁰⁶⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187488).

165066 is an abundant number, since it is smaller than the sum of its proper divisors (209910).

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

165066 is a wasteful number, since it uses less digits than its factorization.

165066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 165066 is about 406.2831524934. The cubic root of 165066 is about 54.8553776249.

It can be divided in two parts, 1650 and 66, that multiplied together give a square (108900 = 330²).

The spelling of 165066 in words is "one hundred sixty-five thousand, sixty-six".