2223765 has 12 divisors (see below), whose sum is σ = 3854604. Its totient is φ = 1185984.

The previous prime is 2223761. The next prime is 2223773. The reversal of 2223765 is 5673222.

It can be written as a sum of positive squares in 2 ways, for example, as 1572516 + 651249 = 1254^2 + 807^2 .

It is not a de Polignac number, because 2223765 - 2² = 2223761 is a prime.

It is a d-powerful number, because it can be written as 2¹³ + 2¹⁷ + 2¹⁷ + 3⁴ + 7 + 6³ + 5⁹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2223761) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24664 + ... + 24753.

It is an arithmetic number, because the mean of its divisors is an integer number (321217).

2^2223765 is an apocalyptic number.

It is an amenable number.

2223765 is a deficient number, since it is larger than the sum of its proper divisors (1630839).

2223765 is a wasteful number, since it uses less digits than its factorization.

2223765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49428 (or 49425 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 2223765 is about 1491.2293586166. The cubic root of 2223765 is about 130.5257799071.

Adding to 2223765 its reverse (5673222), we get a palindrome (7896987).

The spelling of 2223765 in words is "two million, two hundred twenty-three thousand, seven hundred sixty-five".