2223965 has 4 divisors (see below), whose sum is σ = 2668764. Its totient is φ = 1779168.

The previous prime is 2223943. The next prime is 2223967. The reversal of 2223965 is 5693222.

2223965 = 860² + 861² + 862².

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 1104601 + 1119364 = 1051^2 + 1058^2 .

It is a cyclic number.

It is not a de Polignac number, because 2223965 - 2⁶ = 2223901 is a prime.

It is a d-powerful number, because it can be written as 2¹¹ + 2¹⁷ + 2¹⁷ + 3⁸ + 9² + 6 + 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 (2223967) 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, 222392 + ... + 222401.

It is an arithmetic number, because the mean of its divisors is an integer number (667191).

2^2223965 is an apocalyptic number.

It is an amenable number.

2223965 is a deficient number, since it is larger than the sum of its proper divisors (444799).

2223965 is an equidigital number, since it uses as much as digits as its factorization.

2223965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444798.

The product of its digits is 6480, while the sum is 29.

The square root of 2223965 is about 1491.2964158745. The cubic root of 2223965 is about 130.5296928466.

The spelling of 2223965 in words is "two million, two hundred twenty-three thousand, nine hundred sixty-five".