2066606864 has 40 divisors (see below), whose sum is σ = 4618067520. Its totient is φ = 877557888.

The previous prime is 2066606863. The next prime is 2066606891. The reversal of 2066606864 is 4686066602.

It is not an unprimeable number, because it can be changed into a prime (2066606863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72434 + ... + 96849.

It is an arithmetic number, because the mean of its divisors is an integer number (115451688).

Almost surely, 2^2066606864 is an apocalyptic number.

It is an amenable number.

2066606864 is an abundant number, since it is smaller than the sum of its proper divisors (2551460656).

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

2066606864 is a wasteful number, since it uses less digits than its factorization.

2066606864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169407 (or 169401 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 44.

The square root of 2066606864 is about 45459.9479102209. The cubic root of 2066606864 is about 1273.7551584966.

The spelling of 2066606864 in words is "two billion, sixty-six million, six hundred six thousand, eight hundred sixty-four".