9865161 has 24 divisors (see below), whose sum is σ = 15491840. Its totient is φ = 6026400.

The previous prime is 9865153. The next prime is 9865171. The reversal of 9865161 is 1615689.

9865161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9865161 - 2³ = 9865153 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9865171) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4371 + ... + 6231.

Almost surely, 2^9865161 is an apocalyptic number.

It is an amenable number.

9865161 is a deficient number, since it is larger than the sum of its proper divisors (5626679).

9865161 is a wasteful number, since it uses less digits than its factorization.

9865161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1917 (or 1914 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 9865161 is about 3140.8853847283. The cubic root of 9865161 is about 214.4707443759.

The spelling of 9865161 in words is "nine million, eight hundred sixty-five thousand, one hundred sixty-one".