6868055787 has 4 divisors (see below), whose sum is σ = 9157407720. Its totient is φ = 4578703856.

The previous prime is 6868055771. The next prime is 6868055801. The reversal of 6868055787 is 7875508686.

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

It is a cyclic number.

It is not a de Polignac number, because 6868055787 - 2⁴ = 6868055771 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6868055787.

It is not an unprimeable number, because it can be changed into a prime (6868055707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1144675962 + ... + 1144675967.

It is an arithmetic number, because the mean of its divisors is an integer number (2289351930).

Almost surely, 2^6868055787 is an apocalyptic number.

6868055787 is a deficient number, since it is larger than the sum of its proper divisors (2289351933).

6868055787 is a wasteful number, since it uses less digits than its factorization.

6868055787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2289351932.

The product of its (nonzero) digits is 22579200, while the sum is 60.

The square root of 6868055787 is about 82873.7339993800. The cubic root of 6868055787 is about 1900.8358083597.

The spelling of 6868055787 in words is "six billion, eight hundred sixty-eight million, fifty-five thousand, seven hundred eighty-seven".