9561680 has 40 divisors (see below), whose sum is σ = 22712832. Its totient is φ = 3741824.

The previous prime is 9561679. The next prime is 9561691. The reversal of 9561680 is 861659.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 9561680.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2489 + ... + 5031.

Almost surely, 2^9561680 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 9561680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11356416).

9561680 is an abundant number, since it is smaller than the sum of its proper divisors (13151152).

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

9561680 is a wasteful number, since it uses less digits than its factorization.

9561680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2603 (or 2597 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 9561680 is about 3092.1966302291. The cubic root of 9561680 is about 212.2485514858.

The spelling of 9561680 in words is "nine million, five hundred sixty-one thousand, six hundred eighty".