9996647 has 2 divisors, whose sum is σ = 9996648. Its totient is φ = 9996646.

The previous prime is 9996631. The next prime is 9996659. The reversal of 9996647 is 7466999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9996647 - 2⁴ = 9996631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9996595 and 9996604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9996617) 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, 4998323 + 4998324.

It is an arithmetic number, because the mean of its divisors is an integer number (4998324).

Almost surely, 2^9996647 is an apocalyptic number.

9996647 is a deficient number, since it is larger than the sum of its proper divisors (1).

9996647 is an equidigital number, since it uses as much as digits as its factorization.

9996647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 734832, while the sum is 50.

The square root of 9996647 is about 3161.7474598709. The cubic root of 9996647 is about 215.4193869130.

The spelling of 9996647 in words is "nine million, nine hundred ninety-six thousand, six hundred forty-seven".