9916605 has 12 divisors (see below), whose sum is σ = 17188860. Its totient is φ = 5288832.

The previous prime is 9916597. The next prime is 9916607. The reversal of 9916605 is 5066199.

It can be written as a sum of positive squares in 2 ways, for example, as 3229209 + 6687396 = 1797^2 + 2586^2 .

It is not a de Polignac number, because 9916605 - 2³ = 9916597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9916605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9916607) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 110140 + ... + 110229.

It is an arithmetic number, because the mean of its divisors is an integer number (1432405).

Almost surely, 2^9916605 is an apocalyptic number.

It is an amenable number.

9916605 is a deficient number, since it is larger than the sum of its proper divisors (7272255).

9916605 is a wasteful number, since it uses less digits than its factorization.

9916605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220380 (or 220377 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 9916605 is about 3149.0641466950. The cubic root of 9916605 is about 214.8428994765.

The spelling of 9916605 in words is "nine million, nine hundred sixteen thousand, six hundred five".