9864165 has 32 divisors (see below), whose sum is σ = 16920576. Its totient is φ = 4889600.

The previous prime is 9864143. The next prime is 9864167. The reversal of 9864165 is 5614689.

9864165 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 9864165 - 2⁵ = 9864133 is a prime.

It is a super-2 number, since 2×9864165² = 194603502294450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9864167) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25564 + ... + 25946.

It is an arithmetic number, because the mean of its divisors is an integer number (528768).

Almost surely, 2^9864165 is an apocalyptic number.

It is an amenable number.

9864165 is a deficient number, since it is larger than the sum of its proper divisors (7056411).

9864165 is a wasteful number, since it uses less digits than its factorization.

9864165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509.

The product of its digits is 51840, while the sum is 39.

The square root of 9864165 is about 3140.7268267075. The cubic root of 9864165 is about 214.4635263808.

It can be divided in two parts, 986 and 4165, that added together give a triangular number (5151 = T₁₀₁).

The spelling of 9864165 in words is "nine million, eight hundred sixty-four thousand, one hundred sixty-five".