166339 has 4 divisors (see below), whose sum is σ = 167440. Its totient is φ = 165240.

The previous prime is 166319. The next prime is 166349. The reversal of 166339 is 933661.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 933661 = 683 ⋅1367.

It is a cyclic number.

It is not a de Polignac number, because 166339 - 2¹¹ = 164291 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

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 3 ways as a sum of consecutive naturals, for example, 279 + ... + 640.

It is an arithmetic number, because the mean of its divisors is an integer number (41860).

166339 is a Friedman number, since it can be written as (9*6+1)^3-36, using all its digits and the basic arithmetic operations.

2¹⁶⁶³³⁹ is an apocalyptic number.

166339 is a deficient number, since it is larger than the sum of its proper divisors (1101).

166339 is an equidigital number, since it uses as much as digits as its factorization.

166339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100.

The product of its digits is 2916, while the sum is 28.

The square root of 166339 is about 407.8467849573. The cubic root of 166339 is about 54.9960327717.

It can be divided in two parts, 166 and 339, that added together give a palindrome (505).

The spelling of 166339 in words is "one hundred sixty-six thousand, three hundred thirty-nine".