1001166666 has 16 divisors (see below), whose sum is σ = 2020054464. Its totient is φ = 330768704.

The previous prime is 1001166631. The next prime is 1001166707. The reversal of 1001166666 is 6666611001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 737646 + ... + 739001.

It is an arithmetic number, because the mean of its divisors is an integer number (126253404).

Almost surely, 2^1001166666 is an apocalyptic number.

1001166666 is an abundant number, since it is smaller than the sum of its proper divisors (1018887798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1001166666 is a wasteful number, since it uses less digits than its factorization.

1001166666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1476765.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 1001166666 is about 31641.2178337055. The cubic root of 1001166666 is about 1000.3887375302.

Adding to 1001166666 its reverse (6666611001), we get a palindrome (7667777667).

The spelling of 1001166666 in words is "one billion, one million, one hundred sixty-six thousand, six hundred sixty-six".