6781798224 has 50 divisors (see below), whose sum is σ = 19628495370. Its totient is φ = 2260598976.

The previous prime is 6781798211. The next prime is 6781798241. The reversal of 6781798224 is 4228971876.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6778558224 + 3240000 = 82332^2 + 1800^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 2615139 + ... + 2617730.

Almost surely, 2^6781798224 is an apocalyptic number.

It is an amenable number.

6781798224 is an abundant number, since it is smaller than the sum of its proper divisors (12846697146).

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

6781798224 is a wasteful number, since it uses less digits than its factorization.

6781798224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5232889 (or 5232874 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The square root of 6781798224 is about 82351.6740813446. The cubic root of 6781798224 is about 1892.8445752325.

The spelling of 6781798224 in words is "six billion, seven hundred eighty-one million, seven hundred ninety-eight thousand, two hundred twenty-four".