6563223671 has 2 divisors, whose sum is σ = 6563223672. Its totient is φ = 6563223670.

The previous prime is 6563223647. The next prime is 6563223697. The reversal of 6563223671 is 1763223656.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6563223671 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6563223631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3281611835 + 3281611836.

It is an arithmetic number, because the mean of its divisors is an integer number (3281611836).

Almost surely, 2^6563223671 is an apocalyptic number.

6563223671 is a deficient number, since it is larger than the sum of its proper divisors (1).

6563223671 is an equidigital number, since it uses as much as digits as its factorization.

6563223671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 41.

The square root of 6563223671 is about 81013.7252013509. The cubic root of 6563223671 is about 1872.2869130659.

The spelling of 6563223671 in words is "six billion, five hundred sixty-three million, two hundred twenty-three thousand, six hundred seventy-one".