2609321 has 16 divisors (see below), whose sum is σ = 3120768. Its totient is φ = 2150400.

The previous prime is 2609311. The next prime is 2609329. The reversal of 2609321 is 1239062.

2609321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2609321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2609329) 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 15 ways as a sum of consecutive naturals, for example, 10025 + ... + 10281.

It is an arithmetic number, because the mean of its divisors is an integer number (195048).

2^2609321 is an apocalyptic number.

It is an amenable number.

2609321 is a deficient number, since it is larger than the sum of its proper divisors (511447).

2609321 is a wasteful number, since it uses less digits than its factorization.

2609321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352.

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

The square root of 2609321 is about 1615.3392832467. The cubic root of 2609321 is about 137.6710114639.

The spelling of 2609321 in words is "two million, six hundred nine thousand, three hundred twenty-one".