560726561 has 2 divisors, whose sum is σ = 560726562. Its totient is φ = 560726560.

The previous prime is 560726557. The next prime is 560726563. The reversal of 560726561 is 165627065.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 299290000 + 261436561 = 17300^2 + 16169^2 .

It is a cyclic number.

It is not a de Polignac number, because 560726561 - 2² = 560726557 is a prime.

Together with 560726563, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (560726563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280363280 + 280363281.

It is an arithmetic number, because the mean of its divisors is an integer number (280363281).

Almost surely, 2^560726561 is an apocalyptic number.

It is an amenable number.

560726561 is a deficient number, since it is larger than the sum of its proper divisors (1).

560726561 is an equidigital number, since it uses as much as digits as its factorization.

560726561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 560726561 is about 23679.6655592937. The cubic root of 560726561 is about 824.6133779507.

The spelling of 560726561 in words is "five hundred sixty million, seven hundred twenty-six thousand, five hundred sixty-one".