6778039 has 2 divisors, whose sum is σ = 6778040. Its totient is φ = 6778038.

The previous prime is 6778033. The next prime is 6778043. The reversal of 6778039 is 9308776.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6778039 - 2¹⁷ = 6646967 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 6777992 and 6778010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6778033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3389019 + 3389020.

It is an arithmetic number, because the mean of its divisors is an integer number (3389020).

Almost surely, 2^6778039 is an apocalyptic number.

6778039 is a deficient number, since it is larger than the sum of its proper divisors (1).

6778039 is an equidigital number, since it uses as much as digits as its factorization.

6778039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 6778039 is about 2603.4667272696. The cubic root of 6778039 is about 189.2494769194.

The spelling of 6778039 in words is "six million, seven hundred seventy-eight thousand, thirty-nine".