9987305 has 8 divisors (see below), whose sum is σ = 12052800. Its totient is φ = 7944496.

The previous prime is 9987287. The next prime is 9987311. The reversal of 9987305 is 5037899.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9987305 - 2¹⁸ = 9725161 is a prime.

It is a super-2 number, since 2×9987305² = 199492522326050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4685 + ... + 6474.

It is an arithmetic number, because the mean of its divisors is an integer number (1506600).

Almost surely, 2^9987305 is an apocalyptic number.

It is an amenable number.

9987305 is a deficient number, since it is larger than the sum of its proper divisors (2065495).

9987305 is a wasteful number, since it uses less digits than its factorization.

9987305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11343.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 9987305 is about 3160.2697669661. The cubic root of 9987305 is about 215.3522619019.

The spelling of 9987305 in words is "nine million, nine hundred eighty-seven thousand, three hundred five".