6666667407347 has 2 divisors, whose sum is σ = 6666667407348. Its totient is φ = 6666667407346.

The previous prime is 6666667407343. The next prime is 6666667407359. The reversal of 6666667407347 is 7437047666666.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6666667407347 - 2² = 6666667407343 is a prime.

It is not a weakly prime, because it can be changed into another prime (6666667407343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3333333703673 + 3333333703674.

It is an arithmetic number, because the mean of its divisors is an integer number (3333333703674).

Almost surely, 2^{6666667407347} is an apocalyptic number.

6666667407347 is a deficient number, since it is larger than the sum of its proper divisors (1).

6666667407347 is an equidigital number, since it uses as much as digits as its factorization.

6666667407347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768144384, while the sum is 68.

The spelling of 6666667407347 in words is "six trillion, six hundred sixty-six billion, six hundred sixty-seven million, four hundred seven thousand, three hundred forty-seven".