9661313 has 2 divisors, whose sum is σ = 9661314. Its totient is φ = 9661312.

The previous prime is 9661303. The next prime is 9661319. The reversal of 9661313 is 3131669.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8479744 + 1181569 = 2912^2 + 1087^2 .

It is an emirp because it is prime and its reverse (3131669) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9661313 is a prime.

It is a super-3 number, since 3×9661313³ (a number of 22 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (9661319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4830656 + 4830657.

It is an arithmetic number, because the mean of its divisors is an integer number (4830657).

Almost surely, 2^9661313 is an apocalyptic number.

It is an amenable number.

9661313 is a deficient number, since it is larger than the sum of its proper divisors (1).

9661313 is an equidigital number, since it uses as much as digits as its factorization.

9661313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2916, while the sum is 29.

The square root of 9661313 is about 3108.2652718196. The cubic root of 9661313 is about 212.9832177627.

The spelling of 9661313 in words is "nine million, six hundred sixty-one thousand, three hundred thirteen".