560881781 has 2 divisors, whose sum is σ = 560881782. Its totient is φ = 560881780.

The previous prime is 560881771. The next prime is 560881793. The reversal of 560881781 is 187188065.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 557384881 + 3496900 = 23609^2 + 1870^2 .

It is a cyclic number.

It is not a de Polignac number, because 560881781 - 2¹⁴ = 560865397 is a prime.

It is a super-2 number, since 2×560881781² = 629176744515463922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (560881771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280440890 + 280440891.

It is an arithmetic number, because the mean of its divisors is an integer number (280440891).

Almost surely, 2^560881781 is an apocalyptic number.

It is an amenable number.

560881781 is a deficient number, since it is larger than the sum of its proper divisors (1).

560881781 is an equidigital number, since it uses as much as digits as its factorization.

560881781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 107520, while the sum is 44.

The square root of 560881781 is about 23682.9428281200. The cubic root of 560881781 is about 824.6894605958.

The spelling of 560881781 in words is "five hundred sixty million, eight hundred eighty-one thousand, seven hundred eighty-one".