6783912 has 120 divisors (see below), whose sum is σ = 20745450. Its totient is φ = 2068416.

The previous prime is 6783899. The next prime is 6783929. The reversal of 6783912 is 2193876.

It can be written as a sum of positive squares in only one way, i.e., 5731236 + 1052676 = 2394^2 + 1026^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 233914 + ... + 233942.

Almost surely, 2^6783912 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 6783912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10372725).

6783912 is an abundant number, since it is smaller than the sum of its proper divisors (13961538).

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

6783912 is a wasteful number, since it uses less digits than its factorization.

6783912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85 (or 53 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 6783912 is about 2604.5944022055. The cubic root of 6783912 is about 189.3041211075.

Subtracting from 6783912 its sum of digits (36), we obtain a palindrome (6783876).

The spelling of 6783912 in words is "six million, seven hundred eighty-three thousand, nine hundred twelve".