2065265661 has 8 divisors (see below), whose sum is σ = 2754597664. Its totient is φ = 1376388720.

The previous prime is 2065265659. The next prime is 2065265707. The reversal of 2065265661 is 1665625602.

It is a happy number.

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

It is not a de Polignac number, because 2065265661 - 2¹ = 2065265659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2065265641) 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, 103030 + ... + 121431.

It is an arithmetic number, because the mean of its divisors is an integer number (344324708).

Almost surely, 2^2065265661 is an apocalyptic number.

It is an amenable number.

2065265661 is a deficient number, since it is larger than the sum of its proper divisors (689332003).

2065265661 is a wasteful number, since it uses less digits than its factorization.

2065265661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227531.

The product of its (nonzero) digits is 129600, while the sum is 39.

The square root of 2065265661 is about 45445.1940363335. The cubic root of 2065265661 is about 1273.4795482725.

The spelling of 2065265661 in words is "two billion, sixty-five million, two hundred sixty-five thousand, six hundred sixty-one".