1686106 has 8 divisors (see below), whose sum is σ = 2553120. Its totient is φ = 835068.

The previous prime is 1686071. The next prime is 1686109. The reversal of 1686106 is 6016861.

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

It is not an unprimeable number, because it can be changed into a prime (1686109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3726 + ... + 4153.

It is an arithmetic number, because the mean of its divisors is an integer number (319140).

2^1686106 is an apocalyptic number.

1686106 is a deficient number, since it is larger than the sum of its proper divisors (867014).

1686106 is a wasteful number, since it uses less digits than its factorization.

1686106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7988.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1686106 is about 1298.5014439730. The cubic root of 1686106 is about 119.0222870951.

The spelling of 1686106 in words is "one million, six hundred eighty-six thousand, one hundred six".