6778206 has 36 divisors (see below), whose sum is σ = 15612792. Its totient is φ = 2124864.

The previous prime is 6778201. The next prime is 6778207. The reversal of 6778206 is 6028776.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6778201) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4551 + ... + 5853.

Almost surely, 2^6778206 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6778206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7806396).

6778206 is an abundant number, since it is smaller than the sum of its proper divisors (8834586).

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

6778206 is a wasteful number, since it uses less digits than its factorization.

6778206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345 (or 1325 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 6778206 is about 2603.4987996924. The cubic root of 6778206 is about 189.2510311744.

The spelling of 6778206 in words is "six million, seven hundred seventy-eight thousand, two hundred six".