133166 has 8 divisors (see below), whose sum is σ = 217944. Its totient is φ = 60520.

The previous prime is 133157. The next prime is 133169. The reversal of 133166 is 661331.

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

It is a d-powerful number, because it can be written as 1 + 3⁹ + 1 + 3¹⁰ + 6⁵ + 6⁶ .

It is a Curzon 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 133166.

It is not an unprimeable number, because it can be changed into a prime (133169) 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, 3005 + ... + 3048.

It is an arithmetic number, because the mean of its divisors is an integer number (27243).

2¹³³¹⁶⁶ is an apocalyptic number.

133166 is a deficient number, since it is larger than the sum of its proper divisors (84778).

133166 is a wasteful number, since it uses less digits than its factorization.

133166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6066.

The product of its digits is 324, while the sum is 20.

The square root of 133166 is about 364.9191691320. The cubic root of 133166 is about 51.0659150276.

Adding to 133166 its reverse (661331), we get a palindrome (794497).

The spelling of 133166 in words is "one hundred thirty-three thousand, one hundred sixty-six".