6778255 has 16 divisors (see below), whose sum is σ = 8926848. Its totient is φ = 4900000.

The previous prime is 6778249. The next prime is 6778267. The reversal of 6778255 is 5528776.

It is not a de Polignac number, because 6778255 - 2⁷ = 6778127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13560 + ... + 14050.

It is an arithmetic number, because the mean of its divisors is an integer number (557928).

Almost surely, 2^6778255 is an apocalyptic number.

6778255 is a deficient number, since it is larger than the sum of its proper divisors (2148593).

6778255 is a wasteful number, since it uses less digits than its factorization.

6778255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758.

The product of its digits is 117600, while the sum is 40.

The square root of 6778255 is about 2603.5082100888. The cubic root of 6778255 is about 189.2514872084.

The spelling of 6778255 in words is "six million, seven hundred seventy-eight thousand, two hundred fifty-five".