66336433 has 2 divisors, whose sum is σ = 66336434. Its totient is φ = 66336432.

The previous prime is 66336421. The next prime is 66336481. The reversal of 66336433 is 33463366.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54420129 + 11916304 = 7377^2 + 3452^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66336433 is a prime.

It is not a weakly prime, because it can be changed into another prime (66336493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33168216 + 33168217.

It is an arithmetic number, because the mean of its divisors is an integer number (33168217).

Almost surely, 2^66336433 is an apocalyptic number.

It is an amenable number.

66336433 is a deficient number, since it is larger than the sum of its proper divisors (1).

66336433 is an equidigital number, since it uses as much as digits as its factorization.

66336433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 34.

The square root of 66336433 is about 8144.7181043913. The cubic root of 66336433 is about 404.8095085469.

Adding to 66336433 its reverse (33463366), we get a palindrome (99799799).

The spelling of 66336433 in words is "sixty-six million, three hundred thirty-six thousand, four hundred thirty-three".