6728743898 has 8 divisors (see below), whose sum is σ = 10100095392. Its totient is φ = 3362045436.

The previous prime is 6728743877. The next prime is 6728743907. The reversal of 6728743898 is 8983478276.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 6728743898.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1159640 + ... + 1165427.

It is an arithmetic number, because the mean of its divisors is an integer number (1262511924).

Almost surely, 2^6728743898 is an apocalyptic number.

6728743898 is a deficient number, since it is larger than the sum of its proper divisors (3371351494).

6728743898 is a wasteful number, since it uses less digits than its factorization.

6728743898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2326516.

The product of its digits is 32514048, while the sum is 62.

The square root of 6728743898 is about 82028.9211071315. The cubic root of 6728743898 is about 1887.8957103066.

The spelling of 6728743898 in words is "six billion, seven hundred twenty-eight million, seven hundred forty-three thousand, eight hundred ninety-eight".