2106206 has 4 divisors (see below), whose sum is σ = 3159312. Its totient is φ = 1053102.

The previous prime is 2106199. The next prime is 2106217. The reversal of 2106206 is 6026012.

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

It is a super-2 number, since 2×2106206² = 8872207428872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 526550 + ... + 526553.

It is an arithmetic number, because the mean of its divisors is an integer number (789828).

2^2106206 is an apocalyptic number.

2106206 is a deficient number, since it is larger than the sum of its proper divisors (1053106).

2106206 is a wasteful number, since it uses less digits than its factorization.

2106206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053105.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2106206 is about 1451.2773683897. The cubic root of 2106206 is about 128.1839396484.

The spelling of 2106206 in words is "two million, one hundred six thousand, two hundred six".