9996646 has 16 divisors (see below), whose sum is σ = 17321040. Its totient is φ = 4276480.

The previous prime is 9996631. The next prime is 9996647. The reversal of 9996646 is 6466999.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 9996646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9996647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12991 + ... + 13738.

It is an arithmetic number, because the mean of its divisors is an integer number (1082565).

Almost surely, 2^9996646 is an apocalyptic number.

9996646 is a deficient number, since it is larger than the sum of its proper divisors (7324394).

9996646 is a wasteful number, since it uses less digits than its factorization.

9996646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26759.

The product of its digits is 629856, while the sum is 49.

The square root of 9996646 is about 3161.7473017305. The cubic root of 9996646 is about 215.4193797300.

The spelling of 9996646 in words is "nine million, nine hundred ninety-six thousand, six hundred forty-six".