2773227665 has 8 divisors (see below), whose sum is σ = 3583863528. Its totient is φ = 2047921920.

The previous prime is 2773227643. The next prime is 2773227671. The reversal of 2773227665 is 5667223772.

It can be written as a sum of positive squares in 4 ways, for example, as 72658576 + 2700569089 = 8524^2 + 51967^2 .

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

It is not a de Polignac number, because 2773227665 - 2⁸ = 2773227409 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21332456 + ... + 21332585.

It is an arithmetic number, because the mean of its divisors is an integer number (447982941).

Almost surely, 2^2773227665 is an apocalyptic number.

It is an amenable number.

2773227665 is a deficient number, since it is larger than the sum of its proper divisors (810635863).

2773227665 is a wasteful number, since it uses less digits than its factorization.

2773227665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42665059.

The product of its digits is 1481760, while the sum is 47.

The square root of 2773227665 is about 52661.4438180345. The cubic root of 2773227665 is about 1404.9531466162.

The spelling of 2773227665 in words is "two billion, seven hundred seventy-three million, two hundred twenty-seven thousand, six hundred sixty-five".