133320166 has 16 divisors (see below), whose sum is σ = 229404960. Its totient is φ = 56923200.

The previous prime is 133320127. The next prime is 133320211. The reversal of 133320166 is 661023331.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 133320166.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13935 + ... + 21466.

It is an arithmetic number, because the mean of its divisors is an integer number (14337810).

Almost surely, 2^133320166 is an apocalyptic number.

133320166 is a deficient number, since it is larger than the sum of its proper divisors (96084794).

133320166 is a wasteful number, since it uses less digits than its factorization.

133320166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35679.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 133320166 is about 11546.4352074569. The cubic root of 133320166 is about 510.8561372892.

Adding to 133320166 its reverse (661023331), we get a palindrome (794343497).

The spelling of 133320166 in words is "one hundred thirty-three million, three hundred twenty thousand, one hundred sixty-six".