9996817 has 2 divisors, whose sum is σ = 9996818. Its totient is φ = 9996816.

The previous prime is 9996809. The next prime is 9996823. The reversal of 9996817 is 7186999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9960336 + 36481 = 3156^2 + 191^2 .

It is an emirp because it is prime and its reverse (7186999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9996817 - 2³ = 9996809 is a prime.

It is not a weakly prime, because it can be changed into another prime (9996887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4998408 + 4998409.

It is an arithmetic number, because the mean of its divisors is an integer number (4998409).

Almost surely, 2^9996817 is an apocalyptic number.

It is an amenable number.

9996817 is a deficient number, since it is larger than the sum of its proper divisors (1).

9996817 is an equidigital number, since it uses as much as digits as its factorization.

9996817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 49.

The square root of 9996817 is about 3161.7743436242. The cubic root of 9996817 is about 215.4206080254.

The spelling of 9996817 in words is "nine million, nine hundred ninety-six thousand, eight hundred seventeen".