9986775 has 12 divisors (see below), whose sum is σ = 16511592. Its totient is φ = 5326240.

The previous prime is 9986749. The next prime is 9986783. The reversal of 9986775 is 5776899.

9986775 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9986775 - 2¹³ = 9978583 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66504 + ... + 66653.

It is an arithmetic number, because the mean of its divisors is an integer number (1375966).

Almost surely, 2^9986775 is an apocalyptic number.

9986775 is a deficient number, since it is larger than the sum of its proper divisors (6524817).

9986775 is a wasteful number, since it uses less digits than its factorization.

9986775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133170 (or 133165 counting only the distinct ones).

The product of its digits is 952560, while the sum is 51.

The square root of 9986775 is about 3160.1859122526. The cubic root of 9986775 is about 215.3484524418.

The spelling of 9986775 in words is "nine million, nine hundred eighty-six thousand, seven hundred seventy-five".