166333 has 4 divisors (see below), whose sum is σ = 169920. Its totient is φ = 162748.

The previous prime is 166319. The next prime is 166349. The reversal of 166333 is 333661.

It is a happy number.

It is the 167-th star number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 166333 - 2⁵ = 166301 is a prime.

It is a Duffinian number.

166333 is a modest number, since divided by 333 gives 166 as remainder.

166333 is a lucky number.

It is a plaindrome in base 14 and base 16.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1723 + ... + 1816.

It is an arithmetic number, because the mean of its divisors is an integer number (42480).

2¹⁶⁶³³³ is an apocalyptic number.

It is an amenable number.

166333 is a deficient number, since it is larger than the sum of its proper divisors (3587).

166333 is an equidigital number, since it uses as much as digits as its factorization.

166333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3586.

The product of its digits is 972, while the sum is 22.

The square root of 166333 is about 407.8394291875. The cubic root of 166333 is about 54.9953715113.

Adding to 166333 its reverse (333661), we get a palindrome (499994).

It can be divided in two parts, 166 and 333, that multiplied together give a triangular number (55278 = T₃₃₂).

The spelling of 166333 in words is "one hundred sixty-six thousand, three hundred thirty-three".