2258609 has 4 divisors (see below), whose sum is σ = 2261616. Its totient is φ = 2255604.

The previous prime is 2258593. The next prime is 2258617. The reversal of 2258609 is 9068522.

2258609 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2258609 - 2⁴ = 2258593 is a prime.

It is a super-2 number, since 2×2258609² = 10202629229762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2258639) 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, 722 + ... + 2244.

It is an arithmetic number, because the mean of its divisors is an integer number (565404).

2^2258609 is an apocalyptic number.

It is an amenable number.

2258609 is a deficient number, since it is larger than the sum of its proper divisors (3007).

2258609 is a wasteful number, since it uses less digits than its factorization.

2258609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3006.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 2258609 is about 1502.8669269100. The cubic root of 2258609 is about 131.2039826585.

The spelling of 2258609 in words is "two million, two hundred fifty-eight thousand, six hundred nine".