6715722779 has 2 divisors, whose sum is σ = 6715722780. Its totient is φ = 6715722778.

The previous prime is 6715722773. The next prime is 6715722787. The reversal of 6715722779 is 9772275176.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6715722779 - 2²⁰ = 6714674203 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6715722779.

It is not a weakly prime, because it can be changed into another prime (6715722773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3357861389 + 3357861390.

It is an arithmetic number, because the mean of its divisors is an integer number (3357861390).

Almost surely, 2^6715722779 is an apocalyptic number.

6715722779 is a deficient number, since it is larger than the sum of its proper divisors (1).

6715722779 is an equidigital number, since it uses as much as digits as its factorization.

6715722779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2593080, while the sum is 53.

The square root of 6715722779 is about 81949.5135983125. The cubic root of 6715722779 is about 1886.6771377129.

The spelling of 6715722779 in words is "six billion, seven hundred fifteen million, seven hundred twenty-two thousand, seven hundred seventy-nine".