2006686 has 16 divisors (see below), whose sum is σ = 3347568. Its totient is φ = 894400.

The previous prime is 2006677. The next prime is 2006689. The reversal of 2006686 is 6866002.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2006689) 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, 306 + ... + 2026.

It is an arithmetic number, because the mean of its divisors is an integer number (209223).

2^2006686 is an apocalyptic number.

2006686 is a deficient number, since it is larger than the sum of its proper divisors (1340882).

2006686 is a wasteful number, since it uses less digits than its factorization.

2006686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1787.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 2006686 is about 1416.5754480436. The cubic root of 2006686 is about 126.1323460324.

It can be divided in two parts, 200 and 6686, that added together give a palindrome (6886).

The spelling of 2006686 in words is "two million, six thousand, six hundred eighty-six".