9645636 has 144 divisors (see below), whose sum is σ = 30864512. Its totient is φ = 2280960.

The previous prime is 9645611. The next prime is 9645637. The reversal of 9645636 is 6365469.

It is a happy number.

9645636 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 9645594 and 9645603.

It is not an unprimeable number, because it can be changed into a prime (9645637) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 132096 + ... + 132168.

Almost surely, 2^9645636 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9645636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15432256).

9645636 is an abundant number, since it is smaller than the sum of its proper divisors (21218876).

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

9645636 is a wasteful number, since it uses less digits than its factorization.

9645636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122 (or 109 counting only the distinct ones).

The product of its digits is 116640, while the sum is 39.

The square root of 9645636 is about 3105.7424233185. The cubic root of 9645636 is about 212.8679558062.

The spelling of 9645636 in words is "nine million, six hundred forty-five thousand, six hundred thirty-six".