9996631 has 2 divisors, whose sum is σ = 9996632. Its totient is φ = 9996630.

The previous prime is 9996617. The next prime is 9996647. The reversal of 9996631 is 1366999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9996631 - 2⁵ = 9996599 is a prime.

It is a super-2 number, since 2×9996631² = 199865262700322, which contains 22 as substring.

It is a nialpdrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9994631) 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, 4998315 + 4998316.

It is an arithmetic number, because the mean of its divisors is an integer number (4998316).

Almost surely, 2^9996631 is an apocalyptic number.

9996631 is a deficient number, since it is larger than the sum of its proper divisors (1).

9996631 is an equidigital number, since it uses as much as digits as its factorization.

9996631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78732, while the sum is 43.

The square root of 9996631 is about 3161.7449296235. The cubic root of 9996631 is about 215.4192719841.

The spelling of 9996631 in words is "nine million, nine hundred ninety-six thousand, six hundred thirty-one".