2205031666 has 16 divisors (see below), whose sum is σ = 3455136000. Its totient is φ = 1053424768.

The previous prime is 2205031627. The next prime is 2205031723. The reversal of 2205031666 is 6661305022.

2205031666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16935 + ... + 68533.

It is an arithmetic number, because the mean of its divisors is an integer number (215946000).

Almost surely, 2^2205031666 is an apocalyptic number.

2205031666 is a deficient number, since it is larger than the sum of its proper divisors (1250104334).

2205031666 is a wasteful number, since it uses less digits than its factorization.

2205031666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52553.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 2205031666 is about 46957.7647040402. The cubic root of 2205031666 is about 1301.5822285198.

Adding to 2205031666 its reverse (6661305022), we get a palindrome (8866336688).

The spelling of 2205031666 in words is "two billion, two hundred five million, thirty-one thousand, six hundred sixty-six".