778328875 has 8 divisors (see below), whose sum is σ = 971354592. Its totient is φ = 622663000.

The previous prime is 778328861. The next prime is 778328879. The reversal of 778328875 is 578823877.

It is not a de Polignac number, because 778328875 - 2⁵ = 778328843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (778328879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3113191 + ... + 3113440.

It is an arithmetic number, because the mean of its divisors is an integer number (121419324).

Almost surely, 2^778328875 is an apocalyptic number.

778328875 is a deficient number, since it is larger than the sum of its proper divisors (193025717).

778328875 is an equidigital number, since it uses as much as digits as its factorization.

778328875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6226646 (or 6226636 counting only the distinct ones).

The product of its digits is 5268480, while the sum is 55.

The square root of 778328875 is about 27898.5461090717. The cubic root of 778328875 is about 919.8585459110.

The spelling of 778328875 in words is "seven hundred seventy-eight million, three hundred twenty-eight thousand, eight hundred seventy-five".