6778772 has 48 divisors (see below), whose sum is σ = 15937152. Its totient is φ = 2436480.

The previous prime is 6778769. The next prime is 6778777. The reversal of 6778772 is 2778776.

6778772 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6778777) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3158 + ... + 4850.

It is an arithmetic number, because the mean of its divisors is an integer number (332024).

Almost surely, 2^6778772 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6778772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7968576).

6778772 is an abundant number, since it is smaller than the sum of its proper divisors (9158380).

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

6778772 is a wasteful number, since it uses less digits than its factorization.

6778772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1728 (or 1726 counting only the distinct ones).

The product of its digits is 230496, while the sum is 44.

The square root of 6778772 is about 2603.6074973006. The cubic root of 6778772 is about 189.2562986991.

It can be divided in two parts, 677 and 8772, that added together give a palindrome (9449).

The spelling of 6778772 in words is "six million, seven hundred seventy-eight thousand, seven hundred seventy-two".