6667047397 has 2 divisors, whose sum is σ = 6667047398. Its totient is φ = 6667047396.

The previous prime is 6667047383. The next prime is 6667047407. The reversal of 6667047397 is 7937407666.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6649750116 + 17297281 = 81546^2 + 4159^2 .

It is a cyclic number.

It is not a de Polignac number, because 6667047397 - 2¹⁹ = 6666523109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6667047367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3333523698 + 3333523699.

It is an arithmetic number, because the mean of its divisors is an integer number (3333523699).

Almost surely, 2^6667047397 is an apocalyptic number.

It is an amenable number.

6667047397 is a deficient number, since it is larger than the sum of its proper divisors (1).

6667047397 is an equidigital number, since it uses as much as digits as its factorization.

6667047397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8001504, while the sum is 55.

The square root of 6667047397 is about 81651.9895471017. The cubic root of 6667047397 is about 1882.1078851761.

The spelling of 6667047397 in words is "six billion, six hundred sixty-seven million, forty-seven thousand, three hundred ninety-seven".