9665580 has 24 divisors (see below), whose sum is σ = 27063792. Its totient is φ = 2577472.

The previous prime is 9665567. The next prime is 9665587. The reversal of 9665580 is 855669.

9665580 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (9665587) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80487 + ... + 80606.

It is an arithmetic number, because the mean of its divisors is an integer number (1127658).

Almost surely, 2^9665580 is an apocalyptic number.

It is an amenable number.

9665580 is an abundant number, since it is smaller than the sum of its proper divisors (17398212).

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

9665580 is a wasteful number, since it uses less digits than its factorization.

9665580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161105 (or 161103 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 9665580 is about 3108.9515917750. The cubic root of 9665580 is about 213.0145684232.

The spelling of 9665580 in words is "nine million, six hundred sixty-five thousand, five hundred eighty".