6708840583721 has 2 divisors, whose sum is σ = 6708840583722. Its totient is φ = 6708840583720.

The previous prime is 6708840583703. The next prime is 6708840583741. The reversal of 6708840583721 is 1273850488076.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5136296995600 + 1572543588121 = 2266340^2 + 1254011^2 .

It is a cyclic number.

It is not a de Polignac number, because 6708840583721 - 2²² = 6708836389417 is a prime.

It is not a weakly prime, because it can be changed into another prime (6708840583741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3354420291860 + 3354420291861.

It is an arithmetic number, because the mean of its divisors is an integer number (3354420291861).

Almost surely, 2^{6708840583721} is an apocalyptic number.

It is an amenable number.

6708840583721 is a deficient number, since it is larger than the sum of its proper divisors (1).

6708840583721 is an equidigital number, since it uses as much as digits as its factorization.

6708840583721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18063360, while the sum is 59.

The spelling of 6708840583721 in words is "six trillion, seven hundred eight billion, eight hundred forty million, five hundred eighty-three thousand, seven hundred twenty-one".