2065634771 has 4 divisors (see below), whose sum is σ = 2066409072. Its totient is φ = 2064860472.

The previous prime is 2065634743. The next prime is 2065634833. The reversal of 2065634771 is 1774365602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2065634771 - 2²² = 2061440467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2065634741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 383135 + ... + 388488.

It is an arithmetic number, because the mean of its divisors is an integer number (516602268).

Almost surely, 2^2065634771 is an apocalyptic number.

2065634771 is a deficient number, since it is larger than the sum of its proper divisors (774301).

2065634771 is an equidigital number, since it uses as much as digits as its factorization.

2065634771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774300.

The product of its (nonzero) digits is 211680, while the sum is 41.

The square root of 2065634771 is about 45449.2549003831. The cubic root of 2065634771 is about 1273.5554103508. Note that the first 3 decimals are identical.

The spelling of 2065634771 in words is "two billion, sixty-five million, six hundred thirty-four thousand, seven hundred seventy-one".