63109663 has 2 divisors, whose sum is σ = 63109664. Its totient is φ = 63109662.

The previous prime is 63109639. The next prime is 63109747. The reversal of 63109663 is 36690136.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63109663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63109603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31554831 + 31554832.

It is an arithmetic number, because the mean of its divisors is an integer number (31554832).

Almost surely, 2^63109663 is an apocalyptic number.

63109663 is a deficient number, since it is larger than the sum of its proper divisors (1).

63109663 is an equidigital number, since it uses as much as digits as its factorization.

63109663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 63109663 is about 7944.1590492638. The cubic root of 63109663 is about 398.1364628054.

Adding to 63109663 its reverse (36690136), we get a palindrome (99799799).

The spelling of 63109663 in words is "sixty-three million, one hundred nine thousand, six hundred sixty-three".