2162609 has 4 divisors (see below), whose sum is σ = 2165604. Its totient is φ = 2159616.

The previous prime is 2162603. The next prime is 2162623. The reversal of 2162609 is 9062612.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 908209 + 1254400 = 953^2 + 1120^2 .

It is a cyclic number.

It is not a de Polignac number, because 2162609 - 2⁸ = 2162353 is a prime.

It is a super-3 number, since 3×2162609³ = 30342773332644097587, which contains 333 as substring.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2162603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 329 + ... + 2105.

It is an arithmetic number, because the mean of its divisors is an integer number (541401).

2^2162609 is an apocalyptic number.

It is an amenable number.

2162609 is a deficient number, since it is larger than the sum of its proper divisors (2995).

2162609 is a wasteful number, since it uses less digits than its factorization.

2162609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2994.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 2162609 is about 1470.5811776301. The cubic root of 2162609 is about 129.3181060177.

The spelling of 2162609 in words is "two million, one hundred sixty-two thousand, six hundred nine".