2106705 has 24 divisors (see below), whose sum is σ = 3511872. Its totient is φ = 1078336.

The previous prime is 2106679. The next prime is 2106733. The reversal of 2106705 is 5076012.

It is not a de Polignac number, because 2106705 - 2⁵ = 2106673 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12532 + ... + 12698.

It is an arithmetic number, because the mean of its divisors is an integer number (146328).

2^2106705 is an apocalyptic number.

It is an amenable number.

2106705 is a deficient number, since it is larger than the sum of its proper divisors (1405167).

2106705 is a wasteful number, since it uses less digits than its factorization.

2106705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 2106705 is about 1451.4492757241. The cubic root of 2106705 is about 128.1940619149.

The spelling of 2106705 in words is "two million, one hundred six thousand, seven hundred five".