2005659 has 24 divisors (see below), whose sum is σ = 3141840. Its totient is φ = 1228608.

The previous prime is 2005613. The next prime is 2005667. The reversal of 2005659 is 9565002.

2005659 is a `hidden beast` number, since 2 + 0 + 0 + 5 + 659 = 666.

It is not a de Polignac number, because 2005659 - 2¹¹ = 2003611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2005459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6169 + ... + 6485.

It is an arithmetic number, because the mean of its divisors is an integer number (130910).

2^2005659 is an apocalyptic number.

2005659 is a deficient number, since it is larger than the sum of its proper divisors (1136181).

2005659 is a wasteful number, since it uses less digits than its factorization.

2005659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379 (or 376 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 2005659 is about 1416.2129077226. The cubic root of 2005659 is about 126.1108246411.

The spelling of 2005659 in words is "two million, five thousand, six hundred fifty-nine".