6666673361 has 2 divisors, whose sum is σ = 6666673362. Its totient is φ = 6666673360.

The previous prime is 6666673339. The next prime is 6666673379. The reversal of 6666673361 is 1633766666.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3703939600 + 2962733761 = 60860^2 + 54431^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6666673361 is a prime.

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 (6666673261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3333336680 + 3333336681.

It is an arithmetic number, because the mean of its divisors is an integer number (3333336681).

Almost surely, 2^6666673361 is an apocalyptic number.

It is an amenable number.

6666673361 is a deficient number, since it is larger than the sum of its proper divisors (1).

6666673361 is an equidigital number, since it uses as much as digits as its factorization.

6666673361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2939328, while the sum is 50.

The square root of 6666673361 is about 81649.6990870144. The cubic root of 6666673361 is about 1882.0726877227.

The spelling of 6666673361 in words is "six billion, six hundred sixty-six million, six hundred seventy-three thousand, three hundred sixty-one".