3865165 has 8 divisors (see below), whose sum is σ = 4679928. Its totient is φ = 3064320.

The previous prime is 3865157. The next prime is 3865187. The reversal of 3865165 is 5615683.

It can be written as a sum of positive squares in 4 ways, for example, as 66564 + 3798601 = 258^2 + 1949^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3865165 - 2³ = 3865157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3865165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2856 + ... + 3985.

It is an arithmetic number, because the mean of its divisors is an integer number (584991).

Almost surely, 2^3865165 is an apocalyptic number.

It is an amenable number.

3865165 is a deficient number, since it is larger than the sum of its proper divisors (814763).

3865165 is a wasteful number, since it uses less digits than its factorization.

3865165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6959.

The product of its digits is 21600, while the sum is 34.

The square root of 3865165 is about 1966.0022889102. The cubic root of 3865165 is about 156.9360362588.

The spelling of 3865165 in words is "three million, eight hundred sixty-five thousand, one hundred sixty-five".