6777229 has 2 divisors, whose sum is σ = 6777230. Its totient is φ = 6777228.

The previous prime is 6777227. The next prime is 6777241. The reversal of 6777229 is 9227776.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4831204 + 1946025 = 2198^2 + 1395^2 .

It is a cyclic number.

It is not a de Polignac number, because 6777229 - 2¹ = 6777227 is a prime.

Together with 6777227, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 6777191 and 6777200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6777227) 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, 3388614 + 3388615.

It is an arithmetic number, because the mean of its divisors is an integer number (3388615).

Almost surely, 2^6777229 is an apocalyptic number.

It is an amenable number.

6777229 is a deficient number, since it is larger than the sum of its proper divisors (1).

6777229 is an equidigital number, since it uses as much as digits as its factorization.

6777229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 74088, while the sum is 40.

The square root of 6777229 is about 2603.3111608104. The cubic root of 6777229 is about 189.2419379550.

The spelling of 6777229 in words is "six million, seven hundred seventy-seven thousand, two hundred twenty-nine".