6778442 has 16 divisors (see below), whose sum is σ = 11276064. Its totient is φ = 3030000.

The previous prime is 6778439. The next prime is 6778463. The reversal of 6778442 is 2448776.

It is a junction number, because it is equal to n+sod(n) for n = 6778396 and 6778405.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1184 + ... + 3867.

It is an arithmetic number, because the mean of its divisors is an integer number (704754).

Almost surely, 2^6778442 is an apocalyptic number.

6778442 is a deficient number, since it is larger than the sum of its proper divisors (4497622).

6778442 is a wasteful number, since it uses less digits than its factorization.

6778442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5125.

The product of its digits is 75264, while the sum is 38.

The square root of 6778442 is about 2603.5441229217. The cubic root of 6778442 is about 189.2532275631.

It can be divided in two parts, 677 and 8442, that added together give a palindrome (9119).

The spelling of 6778442 in words is "six million, seven hundred seventy-eight thousand, four hundred forty-two".