2216868705 has 24 divisors (see below), whose sum is σ = 3877833960. Its totient is φ = 1171480320.

The previous prime is 2216868679. The next prime is 2216868707. The reversal of 2216868705 is 5078686122.

It can be written as a sum of positive squares in 4 ways, for example, as 77158656 + 2139710049 = 8784^2 + 46257^2 .

It is not a de Polignac number, because 2216868705 - 2⁵ = 2216868673 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (2216868707) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 221076 + ... + 230885.

It is an arithmetic number, because the mean of its divisors is an integer number (161576415).

Almost surely, 2^2216868705 is an apocalyptic number.

It is an amenable number.

2216868705 is a deficient number, since it is larger than the sum of its proper divisors (1660965255).

2216868705 is a wasteful number, since it uses less digits than its factorization.

2216868705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452081 (or 452078 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 2216868705 is about 47083.6352143715. The cubic root of 2216868705 is about 1303.9071221895.

The spelling of 2216868705 in words is "two billion, two hundred sixteen million, eight hundred sixty-eight thousand, seven hundred five".