2206318655 has 4 divisors (see below), whose sum is σ = 2647582392. Its totient is φ = 1765054920.

The previous prime is 2206318613. The next prime is 2206318711. The reversal of 2206318655 is 5568136022.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2206318655 - 2¹² = 2206314559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220631861 + ... + 220631870.

It is an arithmetic number, because the mean of its divisors is an integer number (661895598).

Almost surely, 2^2206318655 is an apocalyptic number.

2206318655 is a deficient number, since it is larger than the sum of its proper divisors (441263737).

2206318655 is an equidigital number, since it uses as much as digits as its factorization.

2206318655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441263736.

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 2206318655 is about 46971.4663918426. The cubic root of 2206318655 is about 1301.8354064736.

The spelling of 2206318655 in words is "two billion, two hundred six million, three hundred eighteen thousand, six hundred fifty-five".