2259609 has 8 divisors (see below), whose sum is σ = 3286752. Its totient is φ = 1369440.

The previous prime is 2259601. The next prime is 2259629. The reversal of 2259609 is 9069522.

2259609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2259609 - 2³ = 2259601 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 68473 = 2259609 / (2 + 2 + 5 + 9 + 6 + 0 + 9).

It is an Ulam number.

2259609 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2259609.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2259601) 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 7 ways as a sum of consecutive naturals, for example, 34204 + ... + 34269.

It is an arithmetic number, because the mean of its divisors is an integer number (410844).

2^2259609 is an apocalyptic number.

It is an amenable number.

2259609 is a deficient number, since it is larger than the sum of its proper divisors (1027143).

2259609 is a wasteful number, since it uses less digits than its factorization.

2259609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68487.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 2259609 is about 1503.1995875465. The cubic root of 2259609 is about 131.2233433393.

It can be divided in two parts, 2259 and 609, that multiplied together give a palindrome (1375731).

The spelling of 2259609 in words is "two million, two hundred fifty-nine thousand, six hundred nine".