2065836865 has 8 divisors (see below), whose sum is σ = 2539468008. Its totient is φ = 1612360320.

The previous prime is 2065836863. The next prime is 2065836887. The reversal of 2065836865 is 5686385602.

It can be written as a sum of positive squares in 4 ways, for example, as 150111504 + 1915725361 = 12252^2 + 43769^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2065836865 - 2¹ = 2065836863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2065836863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5038422 + ... + 5038831.

It is an arithmetic number, because the mean of its divisors is an integer number (317433501).

Almost surely, 2^2065836865 is an apocalyptic number.

It is an amenable number.

2065836865 is a deficient number, since it is larger than the sum of its proper divisors (473631143).

2065836865 is a wasteful number, since it uses less digits than its factorization.

2065836865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10077299.

The product of its (nonzero) digits is 2073600, while the sum is 49.

The square root of 2065836865 is about 45451.4781387800. The cubic root of 2065836865 is about 1273.5969422998.

The spelling of 2065836865 in words is "two billion, sixty-five million, eight hundred thirty-six thousand, eight hundred sixty-five".