563944013 has 2 divisors, whose sum is σ = 563944014. Its totient is φ = 563944012.

The previous prime is 563944001. The next prime is 563944027. The reversal of 563944013 is 310449365.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 342916324 + 221027689 = 18518^2 + 14867^2 .

It is a cyclic number.

It is not a de Polignac number, because 563944013 - 2¹⁶ = 563878477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (563944093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 281972006 + 281972007.

It is an arithmetic number, because the mean of its divisors is an integer number (281972007).

Almost surely, 2^563944013 is an apocalyptic number.

It is an amenable number.

563944013 is a deficient number, since it is larger than the sum of its proper divisors (1).

563944013 is an equidigital number, since it uses as much as digits as its factorization.

563944013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 563944013 is about 23747.5054058316. The cubic root of 563944013 is about 826.1875828351.

The spelling of 563944013 in words is "five hundred sixty-three million, nine hundred forty-four thousand, thirteen".