6778516 has 24 divisors (see below), whose sum is σ = 12656000. Its totient is φ = 3167424.

The previous prime is 6778483. The next prime is 6778517. The reversal of 6778516 is 6158776.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6778517) 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 7 ways as a sum of consecutive naturals, for example, 5440 + ... + 6568.

Almost surely, 2^6778516 is an apocalyptic number.

It is an amenable number.

6778516 is a deficient number, since it is larger than the sum of its proper divisors (5877484).

6778516 is a wasteful number, since it uses less digits than its factorization.

6778516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231 (or 1229 counting only the distinct ones).

The product of its digits is 70560, while the sum is 40.

The square root of 6778516 is about 2603.5583342802. The cubic root of 6778516 is about 189.2539162507.

It can be divided in two parts, 6 and 778516, that multiplied together give a triangular number (4671096 = T₃₀₅₆).

The spelling of 6778516 in words is "six million, seven hundred seventy-eight thousand, five hundred sixteen".