2235665 has 4 divisors (see below), whose sum is σ = 2682804. Its totient is φ = 1788528.

The previous prime is 2235661. The next prime is 2235671. The reversal of 2235665 is 5665322.

It is a happy number.

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 1203409 + 1032256 = 1097^2 + 1016^2 .

It is a cyclic number.

It is not a de Polignac number, because 2235665 - 2² = 2235661 is a prime.

It is a d-powerful number, because it can be written as 2⁴ + 2¹⁸ + 3⁹ + 5⁴ + 6² + 6² + 5⁹ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2235661) 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, 223562 + ... + 223571.

It is an arithmetic number, because the mean of its divisors is an integer number (670701).

2^2235665 is an apocalyptic number.

It is an amenable number.

2235665 is a deficient number, since it is larger than the sum of its proper divisors (447139).

2235665 is an equidigital number, since it uses as much as digits as its factorization.

2235665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447138.

The product of its digits is 10800, while the sum is 29.

The square root of 2235665 is about 1495.2140315018. The cubic root of 2235665 is about 130.7581927069.

The spelling of 2235665 in words is "two million, two hundred thirty-five thousand, six hundred sixty-five".