563894663 has 2 divisors, whose sum is σ = 563894664. Its totient is φ = 563894662.

The previous prime is 563894651. The next prime is 563894671. The reversal of 563894663 is 366498365.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 563894663 - 2¹⁶ = 563829127 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (563894633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 281947331 + 281947332.

It is an arithmetic number, because the mean of its divisors is an integer number (281947332).

Almost surely, 2^563894663 is an apocalyptic number.

563894663 is a deficient number, since it is larger than the sum of its proper divisors (1).

563894663 is an equidigital number, since it uses as much as digits as its factorization.

563894663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2799360, while the sum is 50.

The square root of 563894663 is about 23746.4663265927. The cubic root of 563894663 is about 826.1634826020.

The spelling of 563894663 in words is "five hundred sixty-three million, eight hundred ninety-four thousand, six hundred sixty-three".