2208609 has 24 divisors (see below), whose sum is σ = 3523520. Its totient is φ = 1324512.

The previous prime is 2208601. The next prime is 2208637. The reversal of 2208609 is 9068022.

2208609 is nontrivially palindromic in base 2.

It is not a de Polignac number, because 2208609 - 2³ = 2208601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2208601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4812 + ... + 5250.

2^2208609 is an apocalyptic number.

It is an amenable number.

2208609 is a deficient number, since it is larger than the sum of its proper divisors (1314911).

2208609 is a wasteful number, since it uses less digits than its factorization.

2208609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501 (or 498 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 2208609 is about 1486.1389571638. The cubic root of 2208609 is about 130.2285722368.

The spelling of 2208609 in words is "two million, two hundred eight thousand, six hundred nine".