9997860 has 24 divisors (see below), whose sum is σ = 27994176. Its totient is φ = 2666080.

The previous prime is 9997859. The next prime is 9997873. The reversal of 9997860 is 687999.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83256 + ... + 83375.

It is an arithmetic number, because the mean of its divisors is an integer number (1166424).

Almost surely, 2^9997860 is an apocalyptic number.

It is an amenable number.

9997860 is an abundant number, since it is smaller than the sum of its proper divisors (17996316).

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

9997860 is a wasteful number, since it uses less digits than its factorization.

9997860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166643 (or 166641 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 48.

The square root of 9997860 is about 3161.9392783543. The cubic root of 9997860 is about 215.4280996060.

The spelling of 9997860 in words is "nine million, nine hundred ninety-seven thousand, eight hundred sixty".