6667184081 has 2 divisors, whose sum is σ = 6667184082. Its totient is φ = 6667184080.

The previous prime is 6667184063. The next prime is 6667184123. The reversal of 6667184081 is 1804817666.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5791971025 + 875213056 = 76105^2 + 29584^2 .

It is a cyclic number.

It is not a de Polignac number, because 6667184081 - 2²² = 6662989777 is a prime.

It is a super-2 number, since 2×6667184081² = 88902687139879629122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (6667184011) 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, 3333592040 + 3333592041.

It is an arithmetic number, because the mean of its divisors is an integer number (3333592041).

Almost surely, 2^6667184081 is an apocalyptic number.

It is an amenable number.

6667184081 is a deficient number, since it is larger than the sum of its proper divisors (1).

6667184081 is an equidigital number, since it uses as much as digits as its factorization.

6667184081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 6667184081 is about 81652.8265340521. The cubic root of 6667184081 is about 1882.1207470554.

The spelling of 6667184081 in words is "six billion, six hundred sixty-seven million, one hundred eighty-four thousand, eighty-one".