563834891 has 2 divisors, whose sum is σ = 563834892. Its totient is φ = 563834890.

The previous prime is 563834881. The next prime is 563834933. The reversal of 563834891 is 198438365.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 563834891 - 2⁶ = 563834827 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (563834881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 281917445 + 281917446.

It is an arithmetic number, because the mean of its divisors is an integer number (281917446).

Almost surely, 2^563834891 is an apocalyptic number.

563834891 is a deficient number, since it is larger than the sum of its proper divisors (1).

563834891 is an equidigital number, since it uses as much as digits as its factorization.

563834891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 622080, while the sum is 47.

The square root of 563834891 is about 23745.2077480910. The cubic root of 563834891 is about 826.1342908682.

The spelling of 563834891 in words is "five hundred sixty-three million, eight hundred thirty-four thousand, eight hundred ninety-one".