9996623 has 16 divisors (see below), whose sum is σ = 12640320. Its totient is φ = 7693056.

The previous prime is 9996617. The next prime is 9996631. The reversal of 9996623 is 3266999.

It is not a de Polignac number, because 9996623 - 2¹⁰ = 9995599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9996673) 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 in 15 ways as a sum of consecutive naturals, for example, 1883 + ... + 4851.

It is an arithmetic number, because the mean of its divisors is an integer number (790020).

Almost surely, 2^9996623 is an apocalyptic number.

9996623 is a deficient number, since it is larger than the sum of its proper divisors (2643697).

9996623 is a wasteful number, since it uses less digits than its factorization.

9996623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3026.

The product of its digits is 157464, while the sum is 44.

The square root of 9996623 is about 3161.7436644991. The cubic root of 9996623 is about 215.4192145196.

The spelling of 9996623 in words is "nine million, nine hundred ninety-six thousand, six hundred twenty-three".