2065571656 has 16 divisors (see below), whose sum is σ = 3909144240. Its totient is φ = 1023133200.

The previous prime is 2065571617. The next prime is 2065571659. The reversal of 2065571656 is 6561755602.

It is not an unprimeable number, because it can be changed into a prime (2065571659) 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 3 ways as a sum of consecutive naturals, for example, 1205670 + ... + 1207381.

It is an arithmetic number, because the mean of its divisors is an integer number (244321515).

Almost surely, 2^2065571656 is an apocalyptic number.

It is an amenable number.

2065571656 is a deficient number, since it is larger than the sum of its proper divisors (1843572584).

2065571656 is a wasteful number, since it uses less digits than its factorization.

2065571656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2413164 (or 2413160 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 43.

The square root of 2065571656 is about 45448.5605492627. The cubic root of 2065571656 is about 1273.5424391535.

The spelling of 2065571656 in words is "two billion, sixty-five million, five hundred seventy-one thousand, six hundred fifty-six".