9631636 has 36 divisors (see below), whose sum is σ = 19795188. Its totient is φ = 4088448.

The previous prime is 9631627. The next prime is 9631649. The reversal of 9631636 is 6361369.

It is a happy number.

9631636 is nontrivially palindromic in base 13.

9631636 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 988036 + 8643600 = 994^2 + 2940^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30616 + ... + 30928.

Almost surely, 2^9631636 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 9631636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9897594).

9631636 is an abundant number, since it is smaller than the sum of its proper divisors (10163552).

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

9631636 is a wasteful number, since it uses less digits than its factorization.

9631636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488 (or 479 counting only the distinct ones).

The product of its digits is 17496, while the sum is 34.

The square root of 9631636 is about 3103.4877154582. The cubic root of 9631636 is about 212.7649180395.

The spelling of 9631636 in words is "nine million, six hundred thirty-one thousand, six hundred thirty-six".