9681385 has 16 divisors (see below), whose sum is σ = 13366656. Its totient is φ = 6594048.

The previous prime is 9681361. The next prime is 9681401. The reversal of 9681385 is 5831869.

It is a happy number.

9681385 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 9681385 - 2⁷ = 9681257 is a prime.

It is a Duffinian number.

9681385 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4857 + ... + 6553.

It is an arithmetic number, because the mean of its divisors is an integer number (835416).

Almost surely, 2^9681385 is an apocalyptic number.

It is an amenable number.

9681385 is a deficient number, since it is larger than the sum of its proper divisors (3685271).

9681385 is a wasteful number, since it uses less digits than its factorization.

9681385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1872.

The product of its digits is 51840, while the sum is 40.

The square root of 9681385 is about 3111.4924071898. The cubic root of 9681385 is about 213.1306111875.

The spelling of 9681385 in words is "nine million, six hundred eighty-one thousand, three hundred eighty-five".