6788889 has 12 divisors (see below), whose sum is σ = 9852336. Its totient is φ = 4504632.

The previous prime is 6788879. The next prime is 6788891. The reversal of 6788889 is 9888876.

6788889 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-6788889 is a prime.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (6788839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 382 + ... + 3704.

It is an arithmetic number, because the mean of its divisors is an integer number (821028).

Almost surely, 2^6788889 is an apocalyptic number.

It is an amenable number.

6788889 is a deficient number, since it is larger than the sum of its proper divisors (3063447).

6788889 is a wasteful number, since it uses less digits than its factorization.

6788889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3556 (or 3553 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 54.

The square root of 6788889 is about 2605.5496541037. The cubic root of 6788889 is about 189.3504039552.

The spelling of 6788889 in words is "six million, seven hundred eighty-eight thousand, eight hundred eighty-nine".