9644636 has 24 divisors (see below), whose sum is σ = 17848320. Its totient is φ = 4550832.

The previous prime is 9644633. The next prime is 9644641. The reversal of 9644636 is 6364469.

It is a happy number.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 9644636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9644633) 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 7 ways as a sum of consecutive naturals, for example, 6605 + ... + 7931.

It is an arithmetic number, because the mean of its divisors is an integer number (743680).

Almost surely, 2^9644636 is an apocalyptic number.

It is an amenable number.

9644636 is a deficient number, since it is larger than the sum of its proper divisors (8203684).

9644636 is a wasteful number, since it uses less digits than its factorization.

9644636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1433 (or 1431 counting only the distinct ones).

The product of its digits is 93312, while the sum is 38.

The square root of 9644636 is about 3105.5814270439. The cubic root of 9644636 is about 212.8605992734.

It can be divided in two parts, 964463 and 6, that added together give a palindrome (964469).

The spelling of 9644636 in words is "nine million, six hundred forty-four thousand, six hundred thirty-six".