5663668663 has 2 divisors, whose sum is σ = 5663668664. Its totient is φ = 5663668662.

The previous prime is 5663668613. The next prime is 5663668687. The reversal of 5663668663 is 3668663665.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5663668663 - 2²¹ = 5661571511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5663668613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2831834331 + 2831834332.

It is an arithmetic number, because the mean of its divisors is an integer number (2831834332).

Almost surely, 2^5663668663 is an apocalyptic number.

5663668663 is a deficient number, since it is larger than the sum of its proper divisors (1).

5663668663 is an equidigital number, since it uses as much as digits as its factorization.

5663668663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16796160, while the sum is 55.

The square root of 5663668663 is about 75257.3495613551. The cubic root of 5663668663 is about 1782.5126177663.

The spelling of 5663668663 in words is "five billion, six hundred sixty-three million, six hundred sixty-eight thousand, six hundred sixty-three".