6768728231 has 4 divisors (see below), whose sum is σ = 6768912864. Its totient is φ = 6768543600.

The previous prime is 6768728221. The next prime is 6768728249. The reversal of 6768728231 is 1328278676.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6768728231 is a prime.

It is a super-2 number, since 2×6768728231² = 91631363730272778722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6768728231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6768728221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16655 + ... + 117536.

It is an arithmetic number, because the mean of its divisors is an integer number (1692228216).

Almost surely, 2^6768728231 is an apocalyptic number.

6768728231 is a deficient number, since it is larger than the sum of its proper divisors (184633).

6768728231 is a wasteful number, since it uses less digits than its factorization.

6768728231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184632.

The product of its digits is 1354752, while the sum is 50.

The square root of 6768728231 is about 82272.2810611205. The cubic root of 6768728231 is about 1891.6278195218.

The spelling of 6768728231 in words is "six billion, seven hundred sixty-eight million, seven hundred twenty-eight thousand, two hundred thirty-one".