2065558664 has 32 divisors (see below), whose sum is σ = 4267845120. Its totient is φ = 931162176.

The previous prime is 2065558603. The next prime is 2065558697. The reversal of 2065558664 is 4668555602.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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, 226472 + ... + 235415.

It is an arithmetic number, because the mean of its divisors is an integer number (133370160).

Almost surely, 2^2065558664 is an apocalyptic number.

It is an amenable number.

2065558664 is an abundant number, since it is smaller than the sum of its proper divisors (2202286456).

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

2065558664 is a wasteful number, since it uses less digits than its factorization.

2065558664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461949 (or 461945 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 47.

The square root of 2065558664 is about 45448.4176182186. The cubic root of 2065558664 is about 1273.5397690455.

The spelling of 2065558664 in words is "two billion, sixty-five million, five hundred fifty-eight thousand, six hundred sixty-four".