6778285 has 4 divisors (see below), whose sum is σ = 8133948. Its totient is φ = 5422624.

The previous prime is 6778283. The next prime is 6778297. The reversal of 6778285 is 5828776.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4721929 + 2056356 = 2173^2 + 1434^2 .

It is a cyclic number.

It is not a de Polignac number, because 6778285 - 2¹ = 6778283 is a prime.

It is a Duffinian number.

6778285 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6778283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 677824 + ... + 677833.

It is an arithmetic number, because the mean of its divisors is an integer number (2033487).

Almost surely, 2^6778285 is an apocalyptic number.

It is an amenable number.

6778285 is a deficient number, since it is larger than the sum of its proper divisors (1355663).

6778285 is a wasteful number, since it uses less digits than its factorization.

6778285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355662.

The product of its digits is 188160, while the sum is 43.

The square root of 6778285 is about 2603.5139715392. The cubic root of 6778285 is about 189.2517664119.

The spelling of 6778285 in words is "six million, seven hundred seventy-eight thousand, two hundred eighty-five".