660003317 has 2 divisors, whose sum is σ = 660003318. Its totient is φ = 660003316.

The previous prime is 660003313. The next prime is 660003343. The reversal of 660003317 is 713300066.

It is an a-pointer prime, because the next prime (660003343) can be obtained adding 660003317 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 515017636 + 144985681 = 22694^2 + 12041^2 .

It is a cyclic number.

It is not a de Polignac number, because 660003317 - 2² = 660003313 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (660003313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330001658 + 330001659.

It is an arithmetic number, because the mean of its divisors is an integer number (330001659).

Almost surely, 2^660003317 is an apocalyptic number.

It is an amenable number.

660003317 is a deficient number, since it is larger than the sum of its proper divisors (1).

660003317 is an equidigital number, since it uses as much as digits as its factorization.

660003317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 660003317 is about 25690.5297142741. The cubic root of 660003317 is about 870.6602276882.

The spelling of 660003317 in words is "six hundred sixty million, three thousand, three hundred seventeen".