1001016666 has 24 divisors (see below), whose sum is σ = 2335706100. Its totient is φ = 308005056.

The previous prime is 1001016647. The next prime is 1001016683. The reversal of 1001016666 is 6666101001.

It can be written as a sum of positive squares in 2 ways, for example, as 968765625 + 32251041 = 31125^2 + 5679^2 .

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 11 ways as a sum of consecutive naturals, for example, 2138691 + ... + 2139158.

Almost surely, 2^1001016666 is an apocalyptic number.

1001016666 is an abundant number, since it is smaller than the sum of its proper divisors (1334689434).

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

1001016666 is a wasteful number, since it uses less digits than its factorization.

1001016666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4277870 (or 4277867 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 1001016666 is about 31638.8474189563. The cubic root of 1001016666 is about 1000.3387738860.

Adding to 1001016666 its reverse (6666101001), we get a palindrome (7667117667).

The spelling of 1001016666 in words is "one billion, one million, sixteen thousand, six hundred sixty-six".