2217900705 has 16 divisors (see below), whose sum is σ = 3552575424. Its totient is φ = 1181568960.

The previous prime is 2217900703. The next prime is 2217900743. The reversal of 2217900705 is 5070097122.

It is not a de Polignac number, because 2217900705 - 2¹ = 2217900703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2217900703) 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 15 ways as a sum of consecutive naturals, for example, 67906 + ... + 95115.

It is an arithmetic number, because the mean of its divisors is an integer number (222035964).

Almost surely, 2^2217900705 is an apocalyptic number.

It is an amenable number.

2217900705 is a deficient number, since it is larger than the sum of its proper divisors (1334674719).

2217900705 is a wasteful number, since it uses less digits than its factorization.

2217900705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163936.

The product of its (nonzero) digits is 8820, while the sum is 33.

The square root of 2217900705 is about 47094.5931609989. The cubic root of 2217900705 is about 1304.1094230586.

Adding to 2217900705 its reverse (5070097122), we get a palindrome (7287997827).

The spelling of 2217900705 in words is "two billion, two hundred seventeen million, nine hundred thousand, seven hundred five".