3868565 has 4 divisors (see below), whose sum is σ = 4642284. Its totient is φ = 3094848.

The previous prime is 3868549. The next prime is 3868567. The reversal of 3868565 is 5658683.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5658683 = 29 ⋅195127.

It can be written as a sum of positive squares in 2 ways, for example, as 707281 + 3161284 = 841^2 + 1778^2 .

It is a cyclic number.

It is not a de Polignac number, because 3868565 - 2⁴ = 3868549 is a prime.

It is a d-powerful number, because it can be written as 3¹³ + 8³ + 6⁵ + 8⁵ + 5³ + 6⁷ + 5⁹ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3868567) 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, 386852 + ... + 386861.

It is an arithmetic number, because the mean of its divisors is an integer number (1160571).

Almost surely, 2^3868565 is an apocalyptic number.

It is an amenable number.

3868565 is a deficient number, since it is larger than the sum of its proper divisors (773719).

3868565 is an equidigital number, since it uses as much as digits as its factorization.

3868565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773718.

The product of its digits is 172800, while the sum is 41.

The square root of 3868565 is about 1966.8667977268. The cubic root of 3868565 is about 156.9820391370.

The spelling of 3868565 in words is "three million, eight hundred sixty-eight thousand, five hundred sixty-five".