2001066668 has 12 divisors (see below), whose sum is σ = 3707858952. Its totient is φ = 941678400.

The previous prime is 2001066667. The next prime is 2001066701. The reversal of 2001066668 is 8666601002.

It is not an unprimeable number, because it can be changed into a prime (2001066667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14713658 + ... + 14713793.

It is an arithmetic number, because the mean of its divisors is an integer number (308988246).

Almost surely, 2^2001066668 is an apocalyptic number.

It is an amenable number.

2001066668 is a deficient number, since it is larger than the sum of its proper divisors (1706792284).

2001066668 is a wasteful number, since it uses less digits than its factorization.

2001066668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29427472 (or 29427470 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 2001066668 is about 44733.2836711100. The cubic root of 2001066668 is about 1260.1449963312.

The spelling of 2001066668 in words is "two billion, one million, sixty-six thousand, six hundred sixty-eight".