6684884708837 has 2 divisors, whose sum is σ = 6684884708838. Its totient is φ = 6684884708836.

The previous prime is 6684884708657. The next prime is 6684884708839. The reversal of 6684884708837 is 7388074884866.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5061640536481 + 1623244172356 = 2249809^2 + 1274066^2 .

It is a cyclic number.

It is not a de Polignac number, because 6684884708837 - 2⁸ = 6684884708581 is a prime.

Together with 6684884708839, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6684884708839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3342442354418 + 3342442354419.

It is an arithmetic number, because the mean of its divisors is an integer number (3342442354419).

Almost surely, 2^{6684884708837} is an apocalyptic number.

It is an amenable number.

6684884708837 is a deficient number, since it is larger than the sum of its proper divisors (1).

6684884708837 is an equidigital number, since it uses as much as digits as its factorization.

6684884708837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2774532096, while the sum is 77.

The spelling of 6684884708837 in words is "six trillion, six hundred eighty-four billion, eight hundred eighty-four million, seven hundred eight thousand, eight hundred thirty-seven".