4205065 has 4 divisors (see below), whose sum is σ = 5046084. Its totient is φ = 3364048.

The previous prime is 4205063. The next prime is 4205077. The reversal of 4205065 is 5605024.

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 1990921 + 2214144 = 1411^2 + 1488^2 .

It is a cyclic number.

It is not a de Polignac number, because 4205065 - 2¹ = 4205063 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4205063) 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, 420502 + ... + 420511.

It is an arithmetic number, because the mean of its divisors is an integer number (1261521).

Almost surely, 2^4205065 is an apocalyptic number.

It is an amenable number.

4205065 is a deficient number, since it is larger than the sum of its proper divisors (841019).

4205065 is an equidigital number, since it uses as much as digits as its factorization.

4205065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841018.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 4205065 is about 2050.6255143248. The cubic root of 4205065 is about 161.4076958189.

The spelling of 4205065 in words is "four million, two hundred five thousand, sixty-five".