2006646 has 32 divisors (see below), whose sum is σ = 4313088. Its totient is φ = 620160.

The previous prime is 2006623. The next prime is 2006651. The reversal of 2006646 is 6466002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10411 + ... + 10601.

It is an arithmetic number, because the mean of its divisors is an integer number (134784).

2^2006646 is an apocalyptic number.

2006646 is an abundant number, since it is smaller than the sum of its proper divisors (2306442).

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

2006646 is a wasteful number, since it uses less digits than its factorization.

2006646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 2006646 is about 1416.5613294171. The cubic root of 2006646 is about 126.1315079463.

The spelling of 2006646 in words is "two million, six thousand, six hundred forty-six".