4220565 has 32 divisors (see below), whose sum is σ = 7257600. Its totient is φ = 2088000.

The previous prime is 4220563. The next prime is 4220597. The reversal of 4220565 is 5650224.

It is not a de Polignac number, because 4220565 - 2¹ = 4220563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4220563) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16690 + ... + 16940.

It is an arithmetic number, because the mean of its divisors is an integer number (226800).

Almost surely, 2^4220565 is an apocalyptic number.

It is an amenable number.

4220565 is a deficient number, since it is larger than the sum of its proper divisors (3037035).

4220565 is a wasteful number, since it uses less digits than its factorization.

4220565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 4220565 is about 2054.4013726631. The cubic root of 4220565 is about 161.6057705721.

Adding to 4220565 its reverse (5650224), we get a palindrome (9870789).

The spelling of 4220565 in words is "four million, two hundred twenty thousand, five hundred sixty-five".