2106686 has 8 divisors (see below), whose sum is σ = 3166344. Its totient is φ = 1051240.

The previous prime is 2106679. The next prime is 2106733. The reversal of 2106686 is 6866012.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1001 + ... + 2283.

It is an arithmetic number, because the mean of its divisors is an integer number (395793).

2^2106686 is an apocalyptic number.

2106686 is a deficient number, since it is larger than the sum of its proper divisors (1059658).

2106686 is a wasteful number, since it uses less digits than its factorization.

2106686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2106.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 2106686 is about 1451.4427305271. The cubic root of 2106686 is about 128.1936765272.

The spelling of 2106686 in words is "two million, one hundred six thousand, six hundred eighty-six".