63633313 has 2 divisors, whose sum is σ = 63633314. Its totient is φ = 63633312.

The previous prime is 63633301. The next prime is 63633319. The reversal of 63633313 is 31333636.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63632529 + 784 = 7977^2 + 28^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63633313 is a prime.

It is not a weakly prime, because it can be changed into another prime (63633319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31816656 + 31816657.

It is an arithmetic number, because the mean of its divisors is an integer number (31816657).

Almost surely, 2^63633313 is an apocalyptic number.

It is an amenable number.

63633313 is a deficient number, since it is larger than the sum of its proper divisors (1).

63633313 is an equidigital number, since it uses as much as digits as its factorization.

63633313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8748, while the sum is 28.

The square root of 63633313 is about 7977.0491411298. The cubic root of 63633313 is about 399.2346051108.

Adding to 63633313 its reverse (31333636), we get a palindrome (94966949).

The spelling of 63633313 in words is "sixty-three million, six hundred thirty-three thousand, three hundred thirteen".