6864272787 has 4 divisors (see below), whose sum is σ = 9152363720. Its totient is φ = 4576181856.

The previous prime is 6864272773. The next prime is 6864272837. The reversal of 6864272787 is 7872724686.

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

It is not a de Polignac number, because 6864272787 - 2¹⁰ = 6864271763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6864272717) 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, 1144045462 + ... + 1144045467.

It is an arithmetic number, because the mean of its divisors is an integer number (2288090930).

Almost surely, 2^6864272787 is an apocalyptic number.

6864272787 is a deficient number, since it is larger than the sum of its proper divisors (2288090933).

6864272787 is a wasteful number, since it uses less digits than its factorization.

6864272787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2288090932.

The product of its digits is 12644352, while the sum is 57.

The square root of 6864272787 is about 82850.9069775340. The cubic root of 6864272787 is about 1900.4867439005.

The spelling of 6864272787 in words is "six billion, eight hundred sixty-four million, two hundred seventy-two thousand, seven hundred eighty-seven".