9615985 has 4 divisors (see below), whose sum is σ = 11539188. Its totient is φ = 7692784.

The previous prime is 9615973. The next prime is 9615989. The reversal of 9615985 is 5895169.

It is a happy number.

9615985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5895169 = 7 ⋅842167.

It can be written as a sum of positive squares in 2 ways, for example, as 5239521 + 4376464 = 2289^2 + 2092^2 .

It is a cyclic number.

It is not a de Polignac number, because 9615985 - 2⁵ = 9615953 is a prime.

It is a Duffinian number.

9615985 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9615989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 961594 + ... + 961603.

It is an arithmetic number, because the mean of its divisors is an integer number (2884797).

Almost surely, 2^9615985 is an apocalyptic number.

It is an amenable number.

9615985 is a deficient number, since it is larger than the sum of its proper divisors (1923203).

9615985 is a wasteful number, since it uses less digits than its factorization.

9615985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1923202.

The product of its digits is 97200, while the sum is 43.

The square root of 9615985 is about 3100.9651723294. The cubic root of 9615985 is about 212.6496109045.

The spelling of 9615985 in words is "nine million, six hundred fifteen thousand, nine hundred eighty-five".