166329 has 6 divisors (see below), whose sum is σ = 240266. Its totient is φ = 110880.

The previous prime is 166319. The next prime is 166349. The reversal of 166329 is 923661.

It is a happy number.

166329 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 164025 + 2304 = 405^2 + 48^2 .

It is not a de Polignac number, because 166329 - 2⁵ = 166297 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a zygodrome in base 3.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 166329.

It is not an unprimeable number, because it can be changed into a prime (166319) 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, 9232 + ... + 9249.

2¹⁶⁶³²⁹ is an apocalyptic number.

It is an amenable number.

166329 is a deficient number, since it is larger than the sum of its proper divisors (73937).

166329 is a wasteful number, since it uses less digits than its factorization.

166329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18487 (or 18484 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 166329 is about 407.8345252673. The cubic root of 166329 is about 54.9949306623.

It can be divided in two parts, 16632 and 9, that added together give a square (16641 = 129²).

The spelling of 166329 in words is "one hundred sixty-six thousand, three hundred twenty-nine".