6778273 has 2 divisors, whose sum is σ = 6778274. Its totient is φ = 6778272.

The previous prime is 6778271. The next prime is 6778283. The reversal of 6778273 is 3728776.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6110784 + 667489 = 2472^2 + 817^2 .

It is a cyclic number.

It is not a de Polignac number, because 6778273 - 2¹ = 6778271 is a prime.

Together with 6778271, it forms a pair of twin primes.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (6778271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3389136 + 3389137.

It is an arithmetic number, because the mean of its divisors is an integer number (3389137).

Almost surely, 2^6778273 is an apocalyptic number.

It is an amenable number.

6778273 is a deficient number, since it is larger than the sum of its proper divisors (1).

6778273 is an equidigital number, since it uses as much as digits as its factorization.

6778273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 98784, while the sum is 40.

The square root of 6778273 is about 2603.5116669606. The cubic root of 6778273 is about 189.2516547306.

The spelling of 6778273 in words is "six million, seven hundred seventy-eight thousand, two hundred seventy-three".