133066 has 4 divisors (see below), whose sum is σ = 199602. Its totient is φ = 66532.

The previous prime is 133051. The next prime is 133069. The reversal of 133066 is 660331.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 77841 + 55225 = 279^2 + 235^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (133069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33265 + ... + 33268.

2¹³³⁰⁶⁶ is an apocalyptic number.

133066 is a deficient number, since it is larger than the sum of its proper divisors (66536).

133066 is an equidigital number, since it uses as much as digits as its factorization.

133066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66535.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 133066 is about 364.7821267551. The cubic root of 133066 is about 51.0531293058.

Adding to 133066 its reverse (660331), we get a palindrome (793397).

The spelling of 133066 in words is "one hundred thirty-three thousand, sixty-six".