63633013 has 2 divisors, whose sum is σ = 63633014. Its totient is φ = 63633012.

The previous prime is 63632939. The next prime is 63633041. The reversal of 63633013 is 31033636.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63632529 + 484 = 7977^2 + 22^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63633013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63633083) 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 as a sum of consecutive naturals, namely, 31816506 + 31816507.

It is an arithmetic number, because the mean of its divisors is an integer number (31816507).

Almost surely, 2^63633013 is an apocalyptic number.

It is an amenable number.

63633013 is a deficient number, since it is larger than the sum of its proper divisors (1).

63633013 is an equidigital number, since it uses as much as digits as its factorization.

63633013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 25.

The square root of 63633013 is about 7977.0303371618. The cubic root of 63633013 is about 399.2339777111.

Adding to 63633013 its reverse (31033636), we get a palindrome (94666649).

The spelling of 63633013 in words is "sixty-three million, six hundred thirty-three thousand, thirteen".