6781224 has 32 divisors (see below), whose sum is σ = 17244000. Its totient is φ = 2221632.

The previous prime is 6781223. The next prime is 6781231. The reversal of 6781224 is 4221876.

It is a junction number, because it is equal to n+sod(n) for n = 6781191 and 6781200.

It is not an unprimeable number, because it can be changed into a prime (6781223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 979 + ... + 3810.

It is an arithmetic number, because the mean of its divisors is an integer number (538875).

Almost surely, 2^6781224 is an apocalyptic number.

It is an amenable number.

6781224 is an abundant number, since it is smaller than the sum of its proper divisors (10462776).

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

6781224 is a wasteful number, since it uses less digits than its factorization.

6781224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4857 (or 4853 counting only the distinct ones).

The product of its digits is 5376, while the sum is 30.

The square root of 6781224 is about 2604.0783398354. The cubic root of 6781224 is about 189.2791150490.

The spelling of 6781224 in words is "six million, seven hundred eighty-one thousand, two hundred twenty-four".