9987684 has 24 divisors (see below), whose sum is σ = 26634048. Its totient is φ = 2853600.

The previous prime is 9987671. The next prime is 9987709. The reversal of 9987684 is 4867899.

It is a happy number.

It is an Ulam number.

It is a nialpdrome in base 16.

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, 59367 + ... + 59534.

It is an arithmetic number, because the mean of its divisors is an integer number (1109752).

Almost surely, 2^9987684 is an apocalyptic number.

It is an amenable number.

9987684 is an abundant number, since it is smaller than the sum of its proper divisors (16646364).

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

9987684 is a wasteful number, since it uses less digits than its factorization.

9987684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118915 (or 118913 counting only the distinct ones).

The product of its digits is 870912, while the sum is 51.

The square root of 9987684 is about 3160.3297296327. The cubic root of 9987684 is about 215.3549859425.

The spelling of 9987684 in words is "nine million, nine hundred eighty-seven thousand, six hundred eighty-four".