786868868687 has 4 divisors (see below), whose sum is σ = 858402402216. Its totient is φ = 715335335160.

The previous prime is 786868868671. The next prime is 786868868693.

786868868687 is nontrivially palindromic in base 10.

786868868687 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 786868868687 - 2⁴ = 786868868671 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 786868868599 and 786868868608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (786868868087) 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, 35766766748 + ... + 35766766769.

It is an arithmetic number, because the mean of its divisors is an integer number (214600600554).

Almost surely, 2^786868868687 is an apocalyptic number.

786868868687 is a deficient number, since it is larger than the sum of its proper divisors (71533533529).

786868868687 is a wasteful number, since it uses less digits than its factorization.

786868868687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71533533528.

The product of its digits is 16647192576, while the sum is 86.

The spelling of 786868868687 in words is "seven hundred eighty-six billion, eight hundred sixty-eight million, eight hundred sixty-eight thousand, six hundred eighty-seven".