2000645864 has 32 divisors (see below), whose sum is σ = 4386803520. Its totient is φ = 837478656.

The previous prime is 2000645827. The next prime is 2000645873. The reversal of 2000645864 is 4685460002.

It is a super-3 number, since 3×2000645864³ (a number of 29 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 413009 + ... + 417824.

It is an arithmetic number, because the mean of its divisors is an integer number (137087610).

Almost surely, 2^2000645864 is an apocalyptic number.

It is an amenable number.

2000645864 is an abundant number, since it is smaller than the sum of its proper divisors (2386157656).

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

2000645864 is a wasteful number, since it uses less digits than its factorization.

2000645864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830889 (or 830885 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 2000645864 is about 44728.5799461597. The cubic root of 2000645864 is about 1260.0566582400.

The spelling of 2000645864 in words is "two billion, six hundred forty-five thousand, eight hundred sixty-four".