2107686 has 48 divisors (see below), whose sum is σ = 5023296. Its totient is φ = 587664.

The previous prime is 2107669. The next prime is 2107709. The reversal of 2107686 is 6867012.

It is a happy number.

It is a congruent 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, 19645 + ... + 19751.

It is an arithmetic number, because the mean of its divisors is an integer number (104652).

2^2107686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2107686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2511648).

2107686 is an abundant number, since it is smaller than the sum of its proper divisors (2915610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2107686 is a wasteful number, since it uses less digits than its factorization.

2107686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 2107686 is about 1451.7871744853. The cubic root of 2107686 is about 128.2139569421.

The spelling of 2107686 in words is "two million, one hundred seven thousand, six hundred eighty-six".