9663817 has 2 divisors, whose sum is σ = 9663818. Its totient is φ = 9663816.

The previous prime is 9663793. The next prime is 9663839. The reversal of 9663817 is 7183669.

9663817 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9308601 + 355216 = 3051^2 + 596^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9663817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9663817.

It is not a weakly prime, because it can be changed into another prime (9663877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4831908 + 4831909.

It is an arithmetic number, because the mean of its divisors is an integer number (4831909).

Almost surely, 2^9663817 is an apocalyptic number.

It is an amenable number.

9663817 is a deficient number, since it is larger than the sum of its proper divisors (1).

9663817 is an equidigital number, since it uses as much as digits as its factorization.

9663817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 40.

The square root of 9663817 is about 3108.6680427476. The cubic root of 9663817 is about 213.0016163631.

The spelling of 9663817 in words is "nine million, six hundred sixty-three thousand, eight hundred seventeen".