6778823 has 2 divisors, whose sum is σ = 6778824. Its totient is φ = 6778822.

The previous prime is 6778799. The next prime is 6778829. The reversal of 6778823 is 3288776.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6778823 - 2⁸ = 6778567 is a prime.

It is a d-powerful number, because it can be written as 6⁸ + 7⁵ + 7⁵ + 8⁴ + 8⁶ + 2¹⁴ + 3¹⁴ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6778829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3389411 + 3389412.

It is an arithmetic number, because the mean of its divisors is an integer number (3389412).

Almost surely, 2^6778823 is an apocalyptic number.

6778823 is a deficient number, since it is larger than the sum of its proper divisors (1).

6778823 is an equidigital number, since it uses as much as digits as its factorization.

6778823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 41.

The square root of 6778823 is about 2603.6172913852. The cubic root of 6778823 is about 189.2567733203.

The spelling of 6778823 in words is "six million, seven hundred seventy-eight thousand, eight hundred twenty-three".