9987066 has 12 divisors (see below), whose sum is σ = 21638682. Its totient is φ = 3329016.

The previous prime is 9987031. The next prime is 9987071. The reversal of 9987066 is 6607899.

It can be written as a sum of positive squares in only one way, i.e., 9455625 + 531441 = 3075^2 + 729^2 .

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 277401 + ... + 277436.

Almost surely, 2^9987066 is an apocalyptic number.

9987066 is an abundant number, since it is smaller than the sum of its proper divisors (11651616).

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

9987066 is a wasteful number, since it uses less digits than its factorization.

9987066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554845 (or 554842 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 9987066 is about 3160.2319535123. The cubic root of 9987066 is about 215.3505440677.

The spelling of 9987066 in words is "nine million, nine hundred eighty-seven thousand, sixty-six".