6684916631 has 2 divisors, whose sum is σ = 6684916632. Its totient is φ = 6684916630.

The previous prime is 6684916607. The next prime is 6684916633. The reversal of 6684916631 is 1366194866.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6684916631 - 2¹⁰ = 6684915607 is a prime.

It is a super-3 number, since 3×6684916631³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

Together with 6684916633, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6684916631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6684916633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3342458315 + 3342458316.

It is an arithmetic number, because the mean of its divisors is an integer number (3342458316).

Almost surely, 2^6684916631 is an apocalyptic number.

6684916631 is a deficient number, since it is larger than the sum of its proper divisors (1).

6684916631 is an equidigital number, since it uses as much as digits as its factorization.

6684916631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1119744, while the sum is 50.

The square root of 6684916631 is about 81761.3394643214. The cubic root of 6684916631 is about 1883.7878804244.

The spelling of 6684916631 in words is "six billion, six hundred eighty-four million, nine hundred sixteen thousand, six hundred thirty-one".