9688644 has 36 divisors (see below), whose sum is σ = 27990144. Its totient is φ = 2768112.

The previous prime is 9688619. The next prime is 9688649. The reversal of 9688644 is 4468869.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 9688644.

It is not an unprimeable number, because it can be changed into a prime (9688649) 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 11 ways as a sum of consecutive naturals, for example, 18972 + ... + 19475.

It is an arithmetic number, because the mean of its divisors is an integer number (777504).

Almost surely, 2^9688644 is an apocalyptic number.

It is an amenable number.

9688644 is an abundant number, since it is smaller than the sum of its proper divisors (18301500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9688644 is a wasteful number, since it uses less digits than its factorization.

9688644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38464 (or 38459 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 9688644 is about 3112.6586706544. The cubic root of 9688644 is about 213.1838655719.

The spelling of 9688644 in words is "nine million, six hundred eighty-eight thousand, six hundred forty-four".