778064579 has 2 divisors, whose sum is σ = 778064580. Its totient is φ = 778064578.

The previous prime is 778064561. The next prime is 778064603. The reversal of 778064579 is 975460877.

It is a weak prime.

It is an emirp because it is prime and its reverse (975460877) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 778064579 - 2⁸ = 778064323 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 778064579.

It is not a weakly prime, because it can be changed into another prime (778064549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 389032289 + 389032290.

It is an arithmetic number, because the mean of its divisors is an integer number (389032290).

Almost surely, 2^778064579 is an apocalyptic number.

778064579 is a deficient number, since it is larger than the sum of its proper divisors (1).

778064579 is an equidigital number, since it uses as much as digits as its factorization.

778064579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2963520, while the sum is 53.

The square root of 778064579 is about 27893.8089726018. The cubic root of 778064579 is about 919.7544157824.

The spelling of 778064579 in words is "seven hundred seventy-eight million, sixty-four thousand, five hundred seventy-nine".