166459 has 4 divisors (see below), whose sum is σ = 175240. Its totient is φ = 157680.

The previous prime is 166457. The next prime is 166471. The reversal of 166459 is 954661.

166459 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 954661 = 23 ⋅41507.

It is a cyclic number.

It is not a de Polignac number, because 166459 - 2¹ = 166457 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166459.

It is not an unprimeable number, because it can be changed into a prime (166457) 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, 4362 + ... + 4399.

It is an arithmetic number, because the mean of its divisors is an integer number (43810).

2¹⁶⁶⁴⁵⁹ is an apocalyptic number.

166459 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

166459 is a deficient number, since it is larger than the sum of its proper divisors (8781).

166459 is an equidigital number, since it uses as much as digits as its factorization.

166459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8780.

The product of its digits is 6480, while the sum is 31.

The square root of 166459 is about 407.9938725030. The cubic root of 166459 is about 55.0092546410.

It can be divided in two parts, 166 and 459, that added together give a 4-th power (625 = 5⁴).

The spelling of 166459 in words is "one hundred sixty-six thousand, four hundred fifty-nine".