560661109 has 2 divisors, whose sum is σ = 560661110. Its totient is φ = 560661108.

The previous prime is 560661103. The next prime is 560661121. The reversal of 560661109 is 901166065.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 332953009 + 227708100 = 18247^2 + 15090^2 .

It is a cyclic number.

It is not a de Polignac number, because 560661109 - 2⁵ = 560661077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (560661103) 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, 280330554 + 280330555.

It is an arithmetic number, because the mean of its divisors is an integer number (280330555).

Almost surely, 2^560661109 is an apocalyptic number.

It is an amenable number.

560661109 is a deficient number, since it is larger than the sum of its proper divisors (1).

560661109 is an equidigital number, since it uses as much as digits as its factorization.

560661109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 560661109 is about 23678.2834893072. The cubic root of 560661109 is about 824.5812917857.

It can be divided in two parts, 56066 and 1109, that added together give a palindrome (57175).

The spelling of 560661109 in words is "five hundred sixty million, six hundred sixty-one thousand, one hundred nine".