3887165 has 4 divisors (see below), whose sum is σ = 4664604. Its totient is φ = 3109728.

The previous prime is 3887129. The next prime is 3887167. The reversal of 3887165 is 5617883.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2181529 + 1705636 = 1477^2 + 1306^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3887165 is a prime.

It is a super-2 number, since 2×3887165² = 30220103474450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3887167) 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, 388712 + ... + 388721.

It is an arithmetic number, because the mean of its divisors is an integer number (1166151).

Almost surely, 2^3887165 is an apocalyptic number.

It is an amenable number.

3887165 is a deficient number, since it is larger than the sum of its proper divisors (777439).

3887165 is an equidigital number, since it uses as much as digits as its factorization.

3887165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777438.

The product of its digits is 40320, while the sum is 38.

The square root of 3887165 is about 1971.5894603086. The cubic root of 3887165 is about 157.2332260613.

The spelling of 3887165 in words is "three million, eight hundred eighty-seven thousand, one hundred sixty-five".