2006000645 has 16 divisors (see below), whose sum is σ = 2690089920. Its totient is φ = 1423324800.

The previous prime is 2006000597. The next prime is 2006000681. The reversal of 2006000645 is 5460006002.

It is not a de Polignac number, because 2006000645 - 2⁸ = 2006000389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2006000645.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 442535 + ... + 447044.

It is an arithmetic number, because the mean of its divisors is an integer number (168130620).

Almost surely, 2^2006000645 is an apocalyptic number.

It is an amenable number.

2006000645 is a deficient number, since it is larger than the sum of its proper divisors (684089275).

2006000645 is a wasteful number, since it uses less digits than its factorization.

2006000645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889636.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 2006000645 is about 44788.3985536433. The cubic root of 2006000645 is about 1261.1798482907.

Adding to 2006000645 its reverse (5460006002), we get a palindrome (7466006647).

The spelling of 2006000645 in words is "two billion, six million, six hundred forty-five", and thus it is an aban number.