9885680 has 80 divisors (see below), whose sum is σ = 26664960. Its totient is φ = 3338496.

The previous prime is 9885647. The next prime is 9885727. The reversal of 9885680 is 865889.

It is a tau number, because it is divible by the number of its divisors (80).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71051 + ... + 71189.

It is an arithmetic number, because the mean of its divisors is an integer number (333312).

Almost surely, 2^9885680 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 9885680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13332480).

9885680 is an abundant number, since it is smaller than the sum of its proper divisors (16779280).

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

9885680 is a wasteful number, since it uses less digits than its factorization.

9885680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286 (or 280 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 44.

The square root of 9885680 is about 3144.1501236423. The cubic root of 9885680 is about 214.6193372417.

The spelling of 9885680 in words is "nine million, eight hundred eighty-five thousand, six hundred eighty".