2208066664 has 16 divisors (see below), whose sum is σ = 4150253700. Its totient is φ = 1101332352.

The previous prime is 2208066647. The next prime is 2208066691. The reversal of 2208066664 is 4666608022.

It can be written as a sum of positive squares in 2 ways, for example, as 2200548100 + 7518564 = 46910^2 + 2742^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334147 + ... + 340690.

Almost surely, 2^2208066664 is an apocalyptic number.

It is an amenable number.

2208066664 is a deficient number, since it is larger than the sum of its proper divisors (1942187036).

2208066664 is a wasteful number, since it uses less digits than its factorization.

2208066664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675252 (or 675248 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 40.

The square root of 2208066664 is about 46990.0698445959. The cubic root of 2208066664 is about 1302.1791191847.

The spelling of 2208066664 in words is "two billion, two hundred eight million, sixty-six thousand, six hundred sixty-four".