4222765 has 4 divisors (see below), whose sum is σ = 5067324. Its totient is φ = 3378208.

The previous prime is 4222763. The next prime is 4222781. The reversal of 4222765 is 5672224.

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 2775556 + 1447209 = 1666^2 + 1203^2 .

It is a cyclic number.

It is not a de Polignac number, because 4222765 - 2¹ = 4222763 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4222763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 422272 + ... + 422281.

It is an arithmetic number, because the mean of its divisors is an integer number (1266831).

Almost surely, 2^4222765 is an apocalyptic number.

It is an amenable number.

4222765 is a deficient number, since it is larger than the sum of its proper divisors (844559).

4222765 is an equidigital number, since it uses as much as digits as its factorization.

4222765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844558.

The product of its digits is 6720, while the sum is 28.

The square root of 4222765 is about 2054.9367386856. The cubic root of 4222765 is about 161.6338450865.

Adding to 4222765 its reverse (5672224), we get a palindrome (9894989).

The spelling of 4222765 in words is "four million, two hundred twenty-two thousand, seven hundred sixty-five".