560717821 has 2 divisors, whose sum is σ = 560717822. Its totient is φ = 560717820.

The previous prime is 560717819. The next prime is 560717831. The reversal of 560717821 is 128717065.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 513520921 + 47196900 = 22661^2 + 6870^2 .

It is a cyclic number.

It is not a de Polignac number, because 560717821 - 2¹ = 560717819 is a prime.

Together with 560717819, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (560717831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280358910 + 280358911.

It is an arithmetic number, because the mean of its divisors is an integer number (280358911).

Almost surely, 2^560717821 is an apocalyptic number.

It is an amenable number.

560717821 is a deficient number, since it is larger than the sum of its proper divisors (1).

560717821 is an equidigital number, since it uses as much as digits as its factorization.

560717821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 37.

The square root of 560717821 is about 23679.4810120492. The cubic root of 560717821 is about 824.6090935343.

The spelling of 560717821 in words is "five hundred sixty million, seven hundred seventeen thousand, eight hundred twenty-one".