2236609 has 4 divisors (see below), whose sum is σ = 2256516. Its totient is φ = 2216704.

The previous prime is 2236603. The next prime is 2236627. The reversal of 2236609 is 9066322.

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 760384 + 1476225 = 872^2 + 1215^2 .

It is a cyclic number.

It is not a de Polignac number, because 2236609 - 2⁹ = 2236097 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2236603) 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, 9784 + ... + 10009.

It is an arithmetic number, because the mean of its divisors is an integer number (564129).

2^2236609 is an apocalyptic number.

It is an amenable number.

2236609 is a deficient number, since it is larger than the sum of its proper divisors (19907).

2236609 is a wasteful number, since it uses less digits than its factorization.

2236609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19906.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 2236609 is about 1495.5296720560. The cubic root of 2236609 is about 130.7765941466.

The spelling of 2236609 in words is "two million, two hundred thirty-six thousand, six hundred nine".