9685985 has 4 divisors (see below), whose sum is σ = 11623188. Its totient is φ = 7748784.

The previous prime is 9685979. The next prime is 9685987. The reversal of 9685985 is 5895869.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5895869 = 7 ⋅842267.

It can be written as a sum of positive squares in 2 ways, for example, as 1437601 + 8248384 = 1199^2 + 2872^2 .

It is a cyclic number.

It is not a de Polignac number, because 9685985 - 2⁴ = 9685969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9685987) 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 3 ways as a sum of consecutive naturals, for example, 968594 + ... + 968603.

It is an arithmetic number, because the mean of its divisors is an integer number (2905797).

Almost surely, 2^9685985 is an apocalyptic number.

It is an amenable number.

9685985 is a deficient number, since it is larger than the sum of its proper divisors (1937203).

9685985 is a wasteful number, since it uses less digits than its factorization.

9685985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1937202.

The product of its digits is 777600, while the sum is 50.

The square root of 9685985 is about 3112.2315145246. The cubic root of 9685985 is about 213.1643613715.

The spelling of 9685985 in words is "nine million, six hundred eighty-five thousand, nine hundred eighty-five".