2222765 has 4 divisors (see below), whose sum is σ = 2667324. Its totient is φ = 1778208.

The previous prime is 2222761. The next prime is 2222783. The reversal of 2222765 is 5672222.

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 1297321 + 925444 = 1139^2 + 962^2 .

It is a cyclic number.

It is not a de Polignac number, because 2222765 - 2² = 2222761 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222761) 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, 222272 + ... + 222281.

It is an arithmetic number, because the mean of its divisors is an integer number (666831).

2^2222765 is an apocalyptic number.

It is an amenable number.

2222765 is a deficient number, since it is larger than the sum of its proper divisors (444559).

2222765 is an equidigital number, since it uses as much as digits as its factorization.

2222765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444558.

The product of its digits is 3360, while the sum is 26.

The square root of 2222765 is about 1490.8940270858. The cubic root of 2222765 is about 130.5062116899.

Adding to 2222765 its reverse (5672222), we get a palindrome (7894987).

The spelling of 2222765 in words is "two million, two hundred twenty-two thousand, seven hundred sixty-five".