2001066667 has 2 divisors, whose sum is σ = 2001066668. Its totient is φ = 2001066666.

The previous prime is 2001066649. The next prime is 2001066701. The reversal of 2001066667 is 7666601002.

It is an a-pointer prime, because the next prime (2001066701) can be obtained adding 2001066667 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2001066667 - 2¹⁵ = 2001033899 is a prime.

It is not a weakly prime, because it can be changed into another prime (2001066167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000533333 + 1000533334.

It is an arithmetic number, because the mean of its divisors is an integer number (1000533334).

Almost surely, 2^2001066667 is an apocalyptic number.

2001066667 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001066667 is an equidigital number, since it uses as much as digits as its factorization.

2001066667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 2001066667 is about 44733.2836599327. The cubic root of 2001066667 is about 1260.1449961213.

Adding to 2001066667 its reverse (7666601002), we get a palindrome (9667667669).

The spelling of 2001066667 in words is "two billion, one million, sixty-six thousand, six hundred sixty-seven".