6488786779 has 2 divisors, whose sum is σ = 6488786780. Its totient is φ = 6488786778.

The previous prime is 6488786737. The next prime is 6488786789. The reversal of 6488786779 is 9776878846.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6488786779 - 2⁷ = 6488786651 is a prime.

It is not a weakly prime, because it can be changed into another prime (6488786789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3244393389 + 3244393390.

It is an arithmetic number, because the mean of its divisors is an integer number (3244393390).

Almost surely, 2^6488786779 is an apocalyptic number.

6488786779 is a deficient number, since it is larger than the sum of its proper divisors (1).

6488786779 is an equidigital number, since it uses as much as digits as its factorization.

6488786779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 227598336, while the sum is 70.

The square root of 6488786779 is about 80553.0060208804. The cubic root of 6488786779 is about 1865.1817947452.

The spelling of 6488786779 in words is "six billion, four hundred eighty-eight million, seven hundred eighty-six thousand, seven hundred seventy-nine".