9986664 has 32 divisors (see below), whose sum is σ = 25549920. Its totient is φ = 3251136.

The previous prime is 9986659. The next prime is 9986693. The reversal of 9986664 is 4666899.

It is a nialpdrome in base 10.

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, 3807 + ... + 5870.

It is an arithmetic number, because the mean of its divisors is an integer number (798435).

Almost surely, 2^9986664 is an apocalyptic number.

It is an amenable number.

9986664 is an abundant number, since it is smaller than the sum of its proper divisors (15563256).

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

9986664 is a wasteful number, since it uses less digits than its factorization.

9986664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9729 (or 9725 counting only the distinct ones).

The product of its digits is 559872, while the sum is 48.

The square root of 9986664 is about 3160.1683499459. The cubic root of 9986664 is about 215.3476545944.

The spelling of 9986664 in words is "nine million, nine hundred eighty-six thousand, six hundred sixty-four".