6778764 has 18 divisors (see below), whose sum is σ = 17135300. Its totient is φ = 2259576.

The previous prime is 6778741. The next prime is 6778769. The reversal of 6778764 is 4678776.

6778764 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (6778769) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 94114 + ... + 94185.

Almost surely, 2^6778764 is an apocalyptic number.

It is an amenable number.

6778764 is an abundant number, since it is smaller than the sum of its proper divisors (10356536).

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

6778764 is a wasteful number, since it uses less digits than its factorization.

6778764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188309 (or 188304 counting only the distinct ones).

The product of its digits is 395136, while the sum is 45.

The square root of 6778764 is about 2603.6059609703. The cubic root of 6778764 is about 189.2562242485.

The spelling of 6778764 in words is "six million, seven hundred seventy-eight thousand, seven hundred sixty-four".