9915705 has 24 divisors (see below), whose sum is σ = 17297280. Its totient is φ = 5254560.

The previous prime is 9915683. The next prime is 9915713. The reversal of 9915705 is 5075199.

It is a happy number.

It is not a de Polignac number, because 9915705 - 2⁵ = 9915673 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 9915705.

It is a congruent 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 23 ways as a sum of consecutive naturals, for example, 7440 + ... + 8670.

It is an arithmetic number, because the mean of its divisors is an integer number (720720).

Almost surely, 2^9915705 is an apocalyptic number.

It is an amenable number.

9915705 is a deficient number, since it is larger than the sum of its proper divisors (7381575).

9915705 is a wasteful number, since it uses less digits than its factorization.

9915705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1421 (or 1418 counting only the distinct ones).

The product of its (nonzero) digits is 14175, while the sum is 36.

The square root of 9915705 is about 3148.9212438548. The cubic root of 9915705 is about 214.8363997904.

The spelling of 9915705 in words is "nine million, nine hundred fifteen thousand, seven hundred five".