2321609 has 4 divisors (see below), whose sum is σ = 2336016. Its totient is φ = 2307204.

The previous prime is 2321603. The next prime is 2321623. The reversal of 2321609 is 9061232.

2321609 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.

It is a cyclic number.

It is not a de Polignac number, because 2321609 - 2⁸ = 2321353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2321603) 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, 6959 + ... + 7284.

It is an arithmetic number, because the mean of its divisors is an integer number (584004).

2^2321609 is an apocalyptic number.

It is an amenable number.

2321609 is a deficient number, since it is larger than the sum of its proper divisors (14407).

2321609 is a wasteful number, since it uses less digits than its factorization.

2321609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14406.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 2321609 is about 1523.6827097529. The cubic root of 2321609 is about 132.4127157431.

The spelling of 2321609 in words is "two million, three hundred twenty-one thousand, six hundred nine".