6778562 has 18 divisors (see below), whose sum is σ = 11873043. Its totient is φ = 2894052.

The previous prime is 6778559. The next prime is 6778567. The reversal of 6778562 is 2658776.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3389281 + 3389281 = 1841^2 + 1841^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=1841.

It is not an unprimeable number, because it can be changed into a prime (6778567) by changing a digit.

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 8 ways as a sum of consecutive naturals, for example, 25643 + ... + 25905.

Almost surely, 2^6778562 is an apocalyptic number.

6778562 is a deficient number, since it is larger than the sum of its proper divisors (5094481).

6778562 is an equidigital number, since it uses as much as digits as its factorization.

6778562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542 (or 272 counting only the distinct ones).

The product of its digits is 141120, while the sum is 41.

The square root of 6778562 is about 2603.5671683289. The cubic root of 6778562 is about 189.2543443513.

The spelling of 6778562 in words is "six million, seven hundred seventy-eight thousand, five hundred sixty-two".