7686878867 has 2 divisors, whose sum is σ = 7686878868. Its totient is φ = 7686878866.

The previous prime is 7686878767. The next prime is 7686878873. The reversal of 7686878867 is 7688786867.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7686878867 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7686878867.

It is not a weakly prime, because it can be changed into another prime (7686878767) 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 as a sum of consecutive naturals, namely, 3843439433 + 3843439434.

It is an arithmetic number, because the mean of its divisors is an integer number (3843439434).

Almost surely, 2^7686878867 is an apocalyptic number.

7686878867 is a deficient number, since it is larger than the sum of its proper divisors (1).

7686878867 is an equidigital number, since it uses as much as digits as its factorization.

7686878867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 303464448, while the sum is 71.

The square root of 7686878867 is about 87674.8474022054. The cubic root of 7686878867 is about 1973.5585373236.

The spelling of 7686878867 in words is "seven billion, six hundred eighty-six million, eight hundred seventy-eight thousand, eight hundred sixty-seven".