3865345 has 12 divisors (see below), whose sum is σ = 5099220. Its totient is φ = 2810720.

The previous prime is 3865333. The next prime is 3865349. The reversal of 3865345 is 5435683.

It can be written as a sum of positive squares in 2 ways, for example, as 450241 + 3415104 = 671^2 + 1848^2 .

It is not a de Polignac number, because 3865345 - 2¹¹ = 3863297 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 3865345.

It is not an unprimeable number, because it can be changed into a prime (3865349) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2590 + ... + 3799.

It is an arithmetic number, because the mean of its divisors is an integer number (424935).

Almost surely, 2^3865345 is an apocalyptic number.

It is an amenable number.

3865345 is a deficient number, since it is larger than the sum of its proper divisors (1233875).

3865345 is a wasteful number, since it uses less digits than its factorization.

3865345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6416 (or 6405 counting only the distinct ones).

The product of its digits is 43200, while the sum is 34.

The square root of 3865345 is about 1966.0480665538. The cubic root of 3865345 is about 156.9384723815.

The spelling of 3865345 in words is "three million, eight hundred sixty-five thousand, three hundred forty-five".