166229 has 4 divisors (see below), whose sum is σ = 189984. Its totient is φ = 142476.

The previous prime is 166219. The next prime is 166237. The reversal of 166229 is 922661.

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, and also an emirpimes, since its reverse is a distinct semiprime: 922661 = 107 ⋅8623.

It is a cyclic number.

It is not a de Polignac number, because 166229 - 2¹⁶ = 100693 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166198 and 166207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166219) 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, 11867 + ... + 11880.

It is an arithmetic number, because the mean of its divisors is an integer number (47496).

2¹⁶⁶²²⁹ is an apocalyptic number.

It is an amenable number.

166229 is a deficient number, since it is larger than the sum of its proper divisors (23755).

166229 is an equidigital number, since it uses as much as digits as its factorization.

166229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23754.

The product of its digits is 1296, while the sum is 26.

The square root of 166229 is about 407.7119080920. The cubic root of 166229 is about 54.9839071375.

The spelling of 166229 in words is "one hundred sixty-six thousand, two hundred twenty-nine".