6680436377 has 2 divisors, whose sum is σ = 6680436378. Its totient is φ = 6680436376.

The previous prime is 6680436349. The next prime is 6680436379. The reversal of 6680436377 is 7736340866.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4515302416 + 2165133961 = 67196^2 + 46531^2 .

It is a cyclic number.

It is not a de Polignac number, because 6680436377 - 2⁶ = 6680436313 is a prime.

It is a super-2 number, since 2×6680436377² = 89256460374289772258, which contains 22 as substring.

Together with 6680436379, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6680436379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3340218188 + 3340218189.

It is an arithmetic number, because the mean of its divisors is an integer number (3340218189).

Almost surely, 2^6680436377 is an apocalyptic number.

It is an amenable number.

6680436377 is a deficient number, since it is larger than the sum of its proper divisors (1).

6680436377 is an equidigital number, since it uses as much as digits as its factorization.

6680436377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3048192, while the sum is 50.

The square root of 6680436377 is about 81733.9365074263. The cubic root of 6680436377 is about 1883.3669460121.

The spelling of 6680436377 in words is "six billion, six hundred eighty million, four hundred thirty-six thousand, three hundred seventy-seven".