2609173 has 4 divisors (see below), whose sum is σ = 2981920. Its totient is φ = 2236428.

The previous prime is 2609171. The next prime is 2609207. The reversal of 2609173 is 3719062.

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 an emirpimes, since its reverse is a distinct semiprime: 3719062 = 2 ⋅1859531.

It is a cyclic number.

It is not a de Polignac number, because 2609173 - 2¹ = 2609171 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2609171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186363 + ... + 186376.

It is an arithmetic number, because the mean of its divisors is an integer number (745480).

2^2609173 is an apocalyptic number.

It is an amenable number.

2609173 is a deficient number, since it is larger than the sum of its proper divisors (372747).

2609173 is an equidigital number, since it uses as much as digits as its factorization.

2609173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372746.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 2609173 is about 1615.2934717877. The cubic root of 2609173 is about 137.6684085269.

The spelling of 2609173 in words is "two million, six hundred nine thousand, one hundred seventy-three".