9631656 has 128 divisors (see below), whose sum is σ = 29462400. Its totient is φ = 2903040.

The previous prime is 9631649. The next prime is 9631667. The reversal of 9631656 is 6561369.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 9631656.

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 31 ways as a sum of consecutive naturals, for example, 157866 + ... + 157926.

It is an arithmetic number, because the mean of its divisors is an integer number (230175).

Almost surely, 2^9631656 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 9631656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14731200).

9631656 is an abundant number, since it is smaller than the sum of its proper divisors (19830744).

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

9631656 is a wasteful number, since it uses less digits than its factorization.

9631656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 126 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 9631656 is about 3103.4909376378. The cubic root of 9631656 is about 212.7650653075.

9631656 divided by its sum of digits (36) gives a triangular number (267546 = T₇₃₁).

The spelling of 9631656 in words is "nine million, six hundred thirty-one thousand, six hundred fifty-six".