2216606655 has 16 divisors (see below), whose sum is σ = 3583135584. Its totient is φ = 1170001920.

The previous prime is 2216606647. The next prime is 2216606663. The reversal of 2216606655 is 5566066122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2216606647) and next prime (2216606663).

It is not a de Polignac number, because 2216606655 - 2³ = 2216606647 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 760266 + ... + 763175.

It is an arithmetic number, because the mean of its divisors is an integer number (223945974).

Almost surely, 2^2216606655 is an apocalyptic number.

2216606655 is a deficient number, since it is larger than the sum of its proper divisors (1366528929).

2216606655 is a wasteful number, since it uses less digits than its factorization.

2216606655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1523546.

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

The square root of 2216606655 is about 47080.8523181134. The cubic root of 2216606655 is about 1303.8557430641.

The spelling of 2216606655 in words is "two billion, two hundred sixteen million, six hundred six thousand, six hundred fifty-five".