2205666668 has 24 divisors (see below), whose sum is σ = 3980642400. Its totient is φ = 1068702080.

The previous prime is 2205666667. The next prime is 2205666689. The reversal of 2205666668 is 8666665022.

It is not an unprimeable number, because it can be changed into a prime (2205666667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20696 + ... + 69567.

It is an arithmetic number, because the mean of its divisors is an integer number (165860100).

Almost surely, 2^2205666668 is an apocalyptic number.

It is an amenable number.

2205666668 is a deficient number, since it is larger than the sum of its proper divisors (1774975732).

2205666668 is a wasteful number, since it uses less digits than its factorization.

2205666668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90457 (or 90455 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 47.

The square root of 2205666668 is about 46964.5256337163. The cubic root of 2205666668 is about 1301.7071591508.

The spelling of 2205666668 in words is "two billion, two hundred five million, six hundred sixty-six thousand, six hundred sixty-eight".