9805660 has 12 divisors (see below), whose sum is σ = 20591928. Its totient is φ = 3922256.

The previous prime is 9805643. The next prime is 9805661. The reversal of 9805660 is 665089.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9805661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245122 + ... + 245161.

It is an arithmetic number, because the mean of its divisors is an integer number (1715994).

Almost surely, 2^9805660 is an apocalyptic number.

It is an amenable number.

9805660 is an abundant number, since it is smaller than the sum of its proper divisors (10786268).

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

9805660 is a wasteful number, since it uses less digits than its factorization.

9805660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490292 (or 490290 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 9805660 is about 3131.3990483488. The cubic root of 9805660 is about 214.0386863416.

The spelling of 9805660 in words is "nine million, eight hundred five thousand, six hundred sixty".