666260041 has 2 divisors, whose sum is σ = 666260042. Its totient is φ = 666260040.

The previous prime is 666260033. The next prime is 666260051. The reversal of 666260041 is 140062666.

666260041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 475240000 + 191020041 = 21800^2 + 13821^2 .

It is a cyclic number.

It is not a de Polignac number, because 666260041 - 2³ = 666260033 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 666259985 and 666260012.

It is not a weakly prime, because it can be changed into another prime (666260011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333130020 + 333130021.

It is an arithmetic number, because the mean of its divisors is an integer number (333130021).

Almost surely, 2^666260041 is an apocalyptic number.

It is an amenable number.

666260041 is a deficient number, since it is larger than the sum of its proper divisors (1).

666260041 is an equidigital number, since it uses as much as digits as its factorization.

666260041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 666260041 is about 25812.0135014687. The cubic root of 666260041 is about 873.4028184942.

The spelling of 666260041 in words is "six hundred sixty-six million, two hundred sixty thousand, forty-one".