660241 has 2 divisors, whose sum is σ = 660242. Its totient is φ = 660240.

The previous prime is 660227. The next prime is 660251. The reversal of 660241 is 142066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 497025 + 163216 = 705^2 + 404^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-660241 is a prime.

It is not a weakly prime, because it can be changed into another prime (660251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330120 + 330121.

It is an arithmetic number, because the mean of its divisors is an integer number (330121).

2⁶⁶⁰²⁴¹ is an apocalyptic number.

It is an amenable number.

660241 is a deficient number, since it is larger than the sum of its proper divisors (1).

660241 is an equidigital number, since it uses as much as digits as its factorization.

660241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 660241 is about 812.5521521724. The cubic root of 660241 is about 87.0764730344.

The spelling of 660241 in words is "six hundred sixty thousand, two hundred forty-one".