6777888 has 48 divisors (see below), whose sum is σ = 19164096. Its totient is φ = 2085120.

The previous prime is 6777839. The next prime is 6777923. The reversal of 6777888 is 8887776.

It is a tau number, because it is divible by the number of its divisors (48).

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 6777888.

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, 1468 + ... + 3963.

It is an arithmetic number, because the mean of its divisors is an integer number (399252).

Almost surely, 2^6777888 is an apocalyptic number.

It is an amenable number.

6777888 is an abundant number, since it is smaller than the sum of its proper divisors (12386208).

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

6777888 is a wasteful number, since it uses less digits than its factorization.

6777888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5457 (or 5449 counting only the distinct ones).

The product of its digits is 1053696, while the sum is 51.

The square root of 6777888 is about 2603.4377273136. The cubic root of 6777888 is about 189.2480715531.

The spelling of 6777888 in words is "six million, seven hundred seventy-seven thousand, eight hundred eighty-eight".