9987016 has 32 divisors (see below), whose sum is σ = 20374200. Its totient is φ = 4561920.

The previous prime is 9987013. The next prime is 9987031. The reversal of 9987016 is 6107899.

It can be written as a sum of positive squares in 4 ways, for example, as 6200100 + 3786916 = 2490^2 + 1946^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 9987016.

It is not an unprimeable number, because it can be changed into a prime (9987013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10896 + ... + 11776.

Almost surely, 2^9987016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9987016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10187100).

9987016 is an abundant number, since it is smaller than the sum of its proper divisors (10387184).

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

9987016 is a wasteful number, since it uses less digits than its factorization.

9987016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009 (or 1005 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 9987016 is about 3160.2240426906. The cubic root of 9987016 is about 215.3501846847.

The spelling of 9987016 in words is "nine million, nine hundred eighty-seven thousand, sixteen".