66635133 has 8 divisors (see below), whose sum is σ = 90098496. Its totient is φ = 43797600.

The previous prime is 66635123. The next prime is 66635141. The reversal of 66635133 is 33153666.

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

It is not a de Polignac number, because 66635133 - 2¹⁴ = 66618749 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66635094 and 66635103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66635123) by changing a digit.

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, 156208 + ... + 156633.

It is an arithmetic number, because the mean of its divisors is an integer number (11262312).

Almost surely, 2^66635133 is an apocalyptic number.

It is an amenable number.

66635133 is a deficient number, since it is larger than the sum of its proper divisors (23463363).

66635133 is a wasteful number, since it uses less digits than its factorization.

66635133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312915.

The product of its digits is 29160, while the sum is 33.

The square root of 66635133 is about 8163.0345460496. The cubic root of 66635133 is about 405.4161915788.

Adding to 66635133 its reverse (33153666), we get a palindrome (99788799).

The spelling of 66635133 in words is "sixty-six million, six hundred thirty-five thousand, one hundred thirty-three".