8668001663 has 2 divisors, whose sum is σ = 8668001664. Its totient is φ = 8668001662.

The previous prime is 8668001597. The next prime is 8668001711. The reversal of 8668001663 is 3661008668.

8668001663 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8668001663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8668001263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4334000831 + 4334000832.

It is an arithmetic number, because the mean of its divisors is an integer number (4334000832).

Almost surely, 2^8668001663 is an apocalyptic number.

8668001663 is a deficient number, since it is larger than the sum of its proper divisors (1).

8668001663 is an equidigital number, since it uses as much as digits as its factorization.

8668001663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 8668001663 is about 93102.1034295144. The cubic root of 8668001663 is about 2054.1855126553.

The spelling of 8668001663 in words is "eight billion, six hundred sixty-eight million, one thousand, six hundred sixty-three".