2105606 has 4 divisors (see below), whose sum is σ = 3158412. Its totient is φ = 1052802.

The previous prime is 2105591. The next prime is 2105611. The reversal of 2105606 is 6065012.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 526400 + ... + 526403.

It is an arithmetic number, because the mean of its divisors is an integer number (789603).

2^2105606 is an apocalyptic number.

2105606 is a deficient number, since it is larger than the sum of its proper divisors (1052806).

2105606 is a wasteful number, since it uses less digits than its factorization.

2105606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052805.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 2105606 is about 1451.0706392178. The cubic root of 2105606 is about 128.1717664694.

The spelling of 2105606 in words is "two million, one hundred five thousand, six hundred six".