2064816571 has 4 divisors (see below), whose sum is σ = 2065310200. Its totient is φ = 2064322944.

The previous prime is 2064816563. The next prime is 2064816577. The reversal of 2064816571 is 1756184602.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1756184602 = 2 ⋅878092301.

It is a cyclic number.

It is not a de Polignac number, because 2064816571 - 2³ = 2064816563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2064816577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240486 + ... + 248923.

It is an arithmetic number, because the mean of its divisors is an integer number (516327550).

Almost surely, 2^2064816571 is an apocalyptic number.

2064816571 is a deficient number, since it is larger than the sum of its proper divisors (493629).

2064816571 is an equidigital number, since it uses as much as digits as its factorization.

2064816571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493628.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 2064816571 is about 45440.2527611808. The cubic root of 2064816571 is about 1273.3872359533.

The spelling of 2064816571 in words is "two billion, sixty-four million, eight hundred sixteen thousand, five hundred seventy-one".