2228136665 has 8 divisors (see below), whose sum is σ = 2674018248. Its totient is φ = 1782339840.

The previous prime is 2228136623. The next prime is 2228136683. The reversal of 2228136665 is 5666318222.

It is a happy number.

2228136665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 796876441 + 1431260224 = 28229^2 + 37832^2 .

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

It is not a de Polignac number, because 2228136665 - 2⁶ = 2228136601 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, 85409 + ... + 108401.

It is an arithmetic number, because the mean of its divisors is an integer number (334252281).

Almost surely, 2^2228136665 is an apocalyptic number.

It is an amenable number.

2228136665 is a deficient number, since it is larger than the sum of its proper divisors (445881583).

2228136665 is a wasteful number, since it uses less digits than its factorization.

2228136665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42379.

The product of its digits is 207360, while the sum is 41.

The square root of 2228136665 is about 47203.1425330984. The cubic root of 2228136665 is about 1306.1125678538.

The spelling of 2228136665 in words is "two billion, two hundred twenty-eight million, one hundred thirty-six thousand, six hundred sixty-five".