166269 has 8 divisors (see below), whose sum is σ = 233440. Its totient is φ = 104976.

The previous prime is 166259. The next prime is 166273. The reversal of 166269 is 962661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 166269 - 2⁵ = 166237 is a prime.

It is a super-2 number, since 2×166269² = 55290760722, which contains 22 as substring.

It is a Duffinian number.

166269 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 166269.

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 7 ways as a sum of consecutive naturals, for example, 1402 + ... + 1515.

It is an arithmetic number, because the mean of its divisors is an integer number (29180).

2¹⁶⁶²⁶⁹ is an apocalyptic number.

166269 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

166269 is a deficient number, since it is larger than the sum of its proper divisors (67171).

166269 is a wasteful number, since it uses less digits than its factorization.

166269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2939.

The product of its digits is 3888, while the sum is 30.

The square root of 166269 is about 407.7609593867. The cubic root of 166269 is about 54.9883170778.

It can be divided in two parts, 166 and 269, that added together give a triangular number (435 = T₂₉).

The spelling of 166269 in words is "one hundred sixty-six thousand, two hundred sixty-nine".