778876716 has 48 divisors (see below), whose sum is σ = 1863316224. Its totient is φ = 253087296.

The previous prime is 778876697. The next prime is 778876717. The reversal of 778876716 is 617678877.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (778876717) 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 in 15 ways as a sum of consecutive naturals, for example, 332686 + ... + 335018.

It is an arithmetic number, because the mean of its divisors is an integer number (38819088).

Almost surely, 2^778876716 is an apocalyptic number.

It is an amenable number.

778876716 is an abundant number, since it is smaller than the sum of its proper divisors (1084439508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

778876716 is a wasteful number, since it uses less digits than its factorization.

778876716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3030 (or 3028 counting only the distinct ones).

The product of its digits is 5531904, while the sum is 57.

The square root of 778876716 is about 27908.3628326708. The cubic root of 778876716 is about 920.0743150429.

The spelling of 778876716 in words is "seven hundred seventy-eight million, eight hundred seventy-six thousand, seven hundred sixteen".