9663780 has 144 divisors (see below), whose sum is σ = 33324480. Its totient is φ = 2080512.

The previous prime is 9663779. The next prime is 9663791. The reversal of 9663780 is 873669.

9663780 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 55774 + ... + 55946.

It is an arithmetic number, because the mean of its divisors is an integer number (231420).

Almost surely, 2^9663780 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 9663780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16662240).

9663780 is an abundant number, since it is smaller than the sum of its proper divisors (23660700).

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

9663780 is a wasteful number, since it uses less digits than its factorization.

9663780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 9663780 is about 3108.6620916401. The cubic root of 9663780 is about 213.0013445219.

The spelling of 9663780 in words is "nine million, six hundred sixty-three thousand, seven hundred eighty".