6690347 has 2 divisors, whose sum is σ = 6690348. Its totient is φ = 6690346.

The previous prime is 6690331. The next prime is 6690353. The reversal of 6690347 is 7430966.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6690347 - 2⁴ = 6690331 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6690247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3345173 + 3345174.

It is an arithmetic number, because the mean of its divisors is an integer number (3345174).

Almost surely, 2^6690347 is an apocalyptic number.

6690347 is a deficient number, since it is larger than the sum of its proper divisors (1).

6690347 is an equidigital number, since it uses as much as digits as its factorization.

6690347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 6690347 is about 2586.5705093811. The cubic root of 6690347 is about 188.4297829172.

The spelling of 6690347 in words is "six million, six hundred ninety thousand, three hundred forty-seven".