6778222 has 8 divisors (see below), whose sum is σ = 11091672. Its totient is φ = 3081000.

The previous prime is 6778217. The next prime is 6778229. The reversal of 6778222 is 2228776.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6778229) 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, 154029 + ... + 154072.

It is an arithmetic number, because the mean of its divisors is an integer number (1386459).

Almost surely, 2^6778222 is an apocalyptic number.

6778222 is a deficient number, since it is larger than the sum of its proper divisors (4313450).

6778222 is a wasteful number, since it uses less digits than its factorization.

6778222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308114.

The product of its digits is 18816, while the sum is 34.

The square root of 6778222 is about 2603.5018724787. The cubic root of 6778222 is about 189.2511800837.

The spelling of 6778222 in words is "six million, seven hundred seventy-eight thousand, two hundred twenty-two".