2106687 has 8 divisors (see below), whose sum is σ = 3064320. Its totient is φ = 1276760.

The previous prime is 2106679. The next prime is 2106733. The reversal of 2106687 is 7866012.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2106687 - 2³ = 2106679 is a prime.

2106687 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2106617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31887 + ... + 31952.

It is an arithmetic number, because the mean of its divisors is an integer number (383040).

2^2106687 is an apocalyptic number.

2106687 is a deficient number, since it is larger than the sum of its proper divisors (957633).

2106687 is a wasteful number, since it uses less digits than its factorization.

2106687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63853.

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

The square root of 2106687 is about 1451.4430750119. The cubic root of 2106687 is about 128.1936968108.

The spelling of 2106687 in words is "two million, one hundred six thousand, six hundred eighty-seven".