2164605 has 8 divisors (see below), whose sum is σ = 3463392. Its totient is φ = 1154448.

The previous prime is 2164597. The next prime is 2164607. The reversal of 2164605 is 5064612.

2164605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2164605 - 2³ = 2164597 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164607) 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 7 ways as a sum of consecutive naturals, for example, 72139 + ... + 72168.

It is an arithmetic number, because the mean of its divisors is an integer number (432924).

2^2164605 is an apocalyptic number.

It is an amenable number.

2164605 is a deficient number, since it is larger than the sum of its proper divisors (1298787).

2164605 is a wasteful number, since it uses less digits than its factorization.

2164605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144315.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 2164605 is about 1471.2596643693. The cubic root of 2164605 is about 129.3578788984.

The spelling of 2164605 in words is "two million, one hundred sixty-four thousand, six hundred five".