660085297 has 2 divisors, whose sum is σ = 660085298. Its totient is φ = 660085296.

The previous prime is 660085253. The next prime is 660085301. The reversal of 660085297 is 792580066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 659513761 + 571536 = 25681^2 + 756^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-660085297 is a prime.

It is not a weakly prime, because it can be changed into another prime (660085207) 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, 330042648 + 330042649.

It is an arithmetic number, because the mean of its divisors is an integer number (330042649).

Almost surely, 2^660085297 is an apocalyptic number.

It is an amenable number.

660085297 is a deficient number, since it is larger than the sum of its proper divisors (1).

660085297 is an equidigital number, since it uses as much as digits as its factorization.

660085297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 660085297 is about 25692.1251943081. The cubic root of 660085297 is about 870.6962748658.

The spelling of 660085297 in words is "six hundred sixty million, eighty-five thousand, two hundred ninety-seven".