6778242 has 28 divisors (see below), whose sum is σ = 15247350. Its totient is φ = 2258928.

The previous prime is 6778241. The next prime is 6778249. The reversal of 6778242 is 2428776.

It can be written as a sum of positive squares in only one way, i.e., 3884841 + 2893401 = 1971^2 + 1701^2 .

It is a super-2 number, since 2×6778242² = 91889129221128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6778197 and 6778206.

It is not an unprimeable number, because it can be changed into a prime (6778241) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 867 + ... + 3782.

Almost surely, 2^6778242 is an apocalyptic number.

6778242 is an abundant number, since it is smaller than the sum of its proper divisors (8469108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6778242 is an equidigital number, since it uses as much as digits as its factorization.

6778242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4669 (or 4654 counting only the distinct ones).

The product of its digits is 37632, while the sum is 36.

The square root of 6778242 is about 2603.5057134564. The cubic root of 6778242 is about 189.2513662200.

The spelling of 6778242 in words is "six million, seven hundred seventy-eight thousand, two hundred forty-two".