2345609 has 16 divisors (see below), whose sum is σ = 2965248. Its totient is φ = 1807872.

The previous prime is 2345599. The next prime is 2345617. The reversal of 2345609 is 9065432.

It is a cyclic number.

It is not a de Polignac number, because 2345609 - 2⁴ = 2345593 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹⁷ + 3¹³ + 4⁹ + 5⁷ + 6⁷ + 0 + 9 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2345659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2309 + ... + 3165.

It is an arithmetic number, because the mean of its divisors is an integer number (185328).

2^2345609 is an apocalyptic number.

It is an amenable number.

2345609 is a deficient number, since it is larger than the sum of its proper divisors (619639).

2345609 is a wasteful number, since it uses less digits than its factorization.

2345609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 2345609 is about 1531.5381157516. The cubic root of 2345609 is about 132.8674315516.

The spelling of 2345609 in words is "two million, three hundred forty-five thousand, six hundred nine".