9993660 has 24 divisors (see below), whose sum is σ = 27982416. Its totient is φ = 2664960.

The previous prime is 9993649. The next prime is 9993679. The reversal of 9993660 is 663999.

It is a congruent 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, 83221 + ... + 83340.

It is an arithmetic number, because the mean of its divisors is an integer number (1165934).

Almost surely, 2^9993660 is an apocalyptic number.

It is an amenable number.

9993660 is an abundant number, since it is smaller than the sum of its proper divisors (17988756).

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

9993660 is a wasteful number, since it uses less digits than its factorization.

9993660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166573 (or 166571 counting only the distinct ones).

The product of its (nonzero) digits is 78732, while the sum is 42.

The square root of 9993660 is about 3161.2750592127. The cubic root of 9993660 is about 215.3979289913.

The spelling of 9993660 in words is "nine million, nine hundred ninety-three thousand, six hundred sixty".