166233 has 4 divisors (see below), whose sum is σ = 221648. Its totient is φ = 110820.

The previous prime is 166219. The next prime is 166237. The reversal of 166233 is 332661.

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 not a de Polignac number, because 166233 - 2⁶ = 166169 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 166233.

It is not an unprimeable number, because it can be changed into a prime (166237) 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, 27703 + ... + 27708.

It is an arithmetic number, because the mean of its divisors is an integer number (55412).

2¹⁶⁶²³³ is an apocalyptic number.

It is an amenable number.

166233 is a deficient number, since it is larger than the sum of its proper divisors (55415).

166233 is an equidigital number, since it uses as much as digits as its factorization.

166233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55414.

The product of its digits is 648, while the sum is 21.

The square root of 166233 is about 407.7168134870. The cubic root of 166233 is about 54.9843481633.

Adding to 166233 its reverse (332661), we get a palindrome (498894).

The spelling of 166233 in words is "one hundred sixty-six thousand, two hundred thirty-three".