2008643 has 8 divisors (see below), whose sum is σ = 2472288. Its totient is φ = 1589184.

The previous prime is 2008637. The next prime is 2008663. The reversal of 2008643 is 3468002.

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 2008643 - 2¹⁰ = 2007619 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2008663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10946 + ... + 11127.

It is an arithmetic number, because the mean of its divisors is an integer number (309036).

2^2008643 is an apocalyptic number.

2008643 is a deficient number, since it is larger than the sum of its proper divisors (463645).

2008643 is a wasteful number, since it uses less digits than its factorization.

2008643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22093.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 2008643 is about 1417.2660300734. The cubic root of 2008643 is about 126.1733358039.

The spelling of 2008643 in words is "two million, eight thousand, six hundred forty-three".