6563223647 has 2 divisors, whose sum is σ = 6563223648. Its totient is φ = 6563223646.

The previous prime is 6563223631. The next prime is 6563223671. The reversal of 6563223647 is 7463223656.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6563223647 - 2⁴ = 6563223631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6563223598 and 6563223607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6563223697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3281611823 + 3281611824.

It is an arithmetic number, because the mean of its divisors is an integer number (3281611824).

Almost surely, 2^6563223647 is an apocalyptic number.

6563223647 is a deficient number, since it is larger than the sum of its proper divisors (1).

6563223647 is an equidigital number, since it uses as much as digits as its factorization.

6563223647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 44.

The square root of 6563223647 is about 81013.7250532279. The cubic root of 6563223647 is about 1872.2869107837.

Subtracting 6563223647 from its reverse (7463223656), we obtain a palindrome (900000009).

The spelling of 6563223647 in words is "six billion, five hundred sixty-three million, two hundred twenty-three thousand, six hundred forty-seven".