6777943 has 2 divisors, whose sum is σ = 6777944. Its totient is φ = 6777942.

The previous prime is 6777931. The next prime is 6777949. The reversal of 6777943 is 3497776.

6777943 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6777943 - 2²¹ = 4680791 is a prime.

It is a super-2 number, since 2×6777943² = 91881022622498, which contains 22 as substring.

It is a d-powerful number, because it can be written as 6⁶ + 7³ + 7⁵ + 7⁷ + 9⁵ + 4¹⁰ + 3¹⁴ .

6777943 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6777943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6777949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3388971 + 3388972.

It is an arithmetic number, because the mean of its divisors is an integer number (3388972).

Almost surely, 2^6777943 is an apocalyptic number.

6777943 is a deficient number, since it is larger than the sum of its proper divisors (1).

6777943 is an equidigital number, since it uses as much as digits as its factorization.

6777943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 222264, while the sum is 43.

The square root of 6777943 is about 2603.4482902489. The cubic root of 6777943 is about 189.2485834439.

The spelling of 6777943 in words is "six million, seven hundred seventy-seven thousand, nine hundred forty-three".