6778808 has 32 divisors (see below), whose sum is σ = 13392000. Its totient is φ = 3212160.

The previous prime is 6778799. The next prime is 6778823. The reversal of 6778808 is 8088776.

It is a happy number.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13913 + ... + 14391.

It is an arithmetic number, because the mean of its divisors is an integer number (418500).

Almost surely, 2^6778808 is an apocalyptic number.

It is an amenable number.

6778808 is a deficient number, since it is larger than the sum of its proper divisors (6613192).

6778808 is a wasteful number, since it uses less digits than its factorization.

6778808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575 (or 571 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 44.

The square root of 6778808 is about 2603.6144107759. The cubic root of 6778808 is about 189.2566337261.

The spelling of 6778808 in words is "six million, seven hundred seventy-eight thousand, eight hundred eight".