663135233 has 2 divisors, whose sum is σ = 663135234. Its totient is φ = 663135232.

The previous prime is 663135227. The next prime is 663135251. The reversal of 663135233 is 332531366.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 599662144 + 63473089 = 24488^2 + 7967^2 .

It is a cyclic number.

It is not a de Polignac number, because 663135233 - 2⁸ = 663134977 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 663135233.

It is not a weakly prime, because it can be changed into another prime (663131233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331567616 + 331567617.

It is an arithmetic number, because the mean of its divisors is an integer number (331567617).

Almost surely, 2^663135233 is an apocalyptic number.

It is an amenable number.

663135233 is a deficient number, since it is larger than the sum of its proper divisors (1).

663135233 is an equidigital number, since it uses as much as digits as its factorization.

663135233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29160, while the sum is 32.

The square root of 663135233 is about 25751.4122525348. The cubic root of 663135233 is about 872.0352373501.

Adding to 663135233 its reverse (332531366), we get a palindrome (995666599).

The spelling of 663135233 in words is "six hundred sixty-three million, one hundred thirty-five thousand, two hundred thirty-three".