9660780216 has 144 divisors (see below), whose sum is σ = 27409560360. Its totient is φ = 3071727360.

The previous prime is 9660780169. The next prime is 9660780221. The reversal of 9660780216 is 6120870669.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7482531 + ... + 7483821.

Almost surely, 2^9660780216 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 9660780216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13704780180).

9660780216 is an abundant number, since it is smaller than the sum of its proper divisors (17748780144).

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

9660780216 is a wasteful number, since it uses less digits than its factorization.

9660780216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446 (or 1386 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 9660780216 is about 98289.2680611673. The cubic root of 9660780216 is about 2129.7930262421.

The spelling of 9660780216 in words is "nine billion, six hundred sixty million, seven hundred eighty thousand, two hundred sixteen".