2006681867 has 2 divisors, whose sum is σ = 2006681868. Its totient is φ = 2006681866.

The previous prime is 2006681821. The next prime is 2006681891. The reversal of 2006681867 is 7681866002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2006681867 - 2¹⁴ = 2006665483 is a prime.

It is not a weakly prime, because it can be changed into another prime (2006681167) by changing a digit.

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 as a sum of consecutive naturals, namely, 1003340933 + 1003340934.

It is an arithmetic number, because the mean of its divisors is an integer number (1003340934).

Almost surely, 2^2006681867 is an apocalyptic number.

2006681867 is a deficient number, since it is larger than the sum of its proper divisors (1).

2006681867 is an equidigital number, since it uses as much as digits as its factorization.

2006681867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 2006681867 is about 44796.0028015893. The cubic root of 2006681867 is about 1261.3225943771.

The spelling of 2006681867 in words is "two billion, six million, six hundred eighty-one thousand, eight hundred sixty-seven".