66133383 has 16 divisors (see below), whose sum is σ = 94245120. Its totient is φ = 41104256.

The previous prime is 66133351. The next prime is 66133391. The reversal of 66133383 is 38333166.

It is a cyclic number.

It is not a de Polignac number, because 66133383 - 2⁵ = 66133351 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66133283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 603 + ... + 11516.

It is an arithmetic number, because the mean of its divisors is an integer number (5890320).

Almost surely, 2^66133383 is an apocalyptic number.

66133383 is a deficient number, since it is larger than the sum of its proper divisors (28111737).

66133383 is a wasteful number, since it uses less digits than its factorization.

66133383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12246.

The product of its digits is 23328, while the sum is 33.

The square root of 66133383 is about 8132.2434174095. The cubic root of 66133383 is about 404.3960576201.

The spelling of 66133383 in words is "sixty-six million, one hundred thirty-three thousand, three hundred eighty-three".