2235865 has 4 divisors (see below), whose sum is σ = 2683044. Its totient is φ = 1788688.

The previous prime is 2235859. The next prime is 2235869. The reversal of 2235865 is 5685322.

It is a happy number.

2235865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 665856 + 1570009 = 816^2 + 1253^2 .

It is a cyclic number.

It is not a de Polignac number, because 2235865 - 2⁹ = 2235353 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 2⁶ + 2¹⁸ + 3⁹ + 5⁴ + 8 + 6³ + 5⁹ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2235869) 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, 223582 + ... + 223591.

It is an arithmetic number, because the mean of its divisors is an integer number (670761).

2^2235865 is an apocalyptic number.

It is an amenable number.

2235865 is a deficient number, since it is larger than the sum of its proper divisors (447179).

2235865 is an equidigital number, since it uses as much as digits as its factorization.

2235865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447178.

The product of its digits is 14400, while the sum is 31.

The square root of 2235865 is about 1495.2809100634. The cubic root of 2235865 is about 130.7620917494.

The spelling of 2235865 in words is "two million, two hundred thirty-five thousand, eight hundred sixty-five".