6434664347 has 2 divisors, whose sum is σ = 6434664348. Its totient is φ = 6434664346.

The previous prime is 6434664343. The next prime is 6434664371. The reversal of 6434664347 is 7434664346.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6434664347 - 2² = 6434664343 is a prime.

It is not a weakly prime, because it can be changed into another prime (6434664343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3217332173 + 3217332174.

It is an arithmetic number, because the mean of its divisors is an integer number (3217332174).

Almost surely, 2^6434664347 is an apocalyptic number.

6434664347 is a deficient number, since it is larger than the sum of its proper divisors (1).

6434664347 is an equidigital number, since it uses as much as digits as its factorization.

6434664347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3483648, while the sum is 47.

The square root of 6434664347 is about 80216.3595970298. The cubic root of 6434664347 is about 1859.9815340017.

Subtracting 6434664347 from its reverse (7434664346), we obtain a palindrome (999999999).

The spelling of 6434664347 in words is "six billion, four hundred thirty-four million, six hundred sixty-four thousand, three hundred forty-seven".