560610991 has 2 divisors, whose sum is σ = 560610992. Its totient is φ = 560610990.

The previous prime is 560610937. The next prime is 560611021. The reversal of 560610991 is 199016065.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-560610991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 560610991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (560610931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280305495 + 280305496.

It is an arithmetic number, because the mean of its divisors is an integer number (280305496).

Almost surely, 2^560610991 is an apocalyptic number.

560610991 is a deficient number, since it is larger than the sum of its proper divisors (1).

560610991 is an equidigital number, since it uses as much as digits as its factorization.

560610991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14580, while the sum is 37.

The square root of 560610991 is about 23677.2251541434. The cubic root of 560610991 is about 824.5567210328.

The spelling of 560610991 in words is "five hundred sixty million, six hundred ten thousand, nine hundred ninety-one".