6778922 has 4 divisors (see below), whose sum is σ = 10168386. Its totient is φ = 3389460.

The previous prime is 6778921. The next prime is 6778927. The reversal of 6778922 is 2298776.

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

It can be written as a sum of positive squares in only one way, i.e., 5193841 + 1585081 = 2279^2 + 1259^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6778922.

It is not an unprimeable number, because it can be changed into a prime (6778921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1694729 + ... + 1694732.

Almost surely, 2^6778922 is an apocalyptic number.

6778922 is a deficient number, since it is larger than the sum of its proper divisors (3389464).

6778922 is a wasteful number, since it uses less digits than its factorization.

6778922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3389463.

The product of its digits is 84672, while the sum is 41.

The square root of 6778922 is about 2603.6363033266. The cubic root of 6778922 is about 189.2576946370.

The spelling of 6778922 in words is "six million, seven hundred seventy-eight thousand, nine hundred twenty-two".