560043661 has 2 divisors, whose sum is σ = 560043662. Its totient is φ = 560043660.

The previous prime is 560043647. The next prime is 560043683. The reversal of 560043661 is 166340065.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 398601225 + 161442436 = 19965^2 + 12706^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-560043661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (560043691) 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, 280021830 + 280021831.

It is an arithmetic number, because the mean of its divisors is an integer number (280021831).

Almost surely, 2^560043661 is an apocalyptic number.

It is an amenable number.

560043661 is a deficient number, since it is larger than the sum of its proper divisors (1).

560043661 is an equidigital number, since it uses as much as digits as its factorization.

560043661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 560043661 is about 23665.2416214160. The cubic root of 560043661 is about 824.2784807666.

The spelling of 560043661 in words is "five hundred sixty million, forty-three thousand, six hundred sixty-one".