2243865 has 32 divisors (see below), whose sum is σ = 3983616. Its totient is φ = 1071360.

The previous prime is 2243851. The next prime is 2243887. The reversal of 2243865 is 5683422.

It is not a de Polignac number, because 2243865 - 2⁵ = 2243833 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7060 + ... + 7370.

It is an arithmetic number, because the mean of its divisors is an integer number (124488).

2^2243865 is an apocalyptic number.

It is an amenable number.

2243865 is a deficient number, since it is larger than the sum of its proper divisors (1739751).

2243865 is a wasteful number, since it uses less digits than its factorization.

2243865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369.

The product of its digits is 11520, while the sum is 30.

The square root of 2243865 is about 1497.9536040879. The cubic root of 2243865 is about 130.9178631625.

The spelling of 2243865 in words is "two million, two hundred forty-three thousand, eight hundred sixty-five".