778871796 has 24 divisors (see below), whose sum is σ = 1924272000. Its totient is φ = 244351872.

The previous prime is 778871791. The next prime is 778871831. The reversal of 778871796 is 697178877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (778871791) 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 7 ways as a sum of consecutive naturals, for example, 1908796 + ... + 1909203.

It is an arithmetic number, because the mean of its divisors is an integer number (80178000).

Almost surely, 2^778871796 is an apocalyptic number.

It is an amenable number.

778871796 is an abundant number, since it is smaller than the sum of its proper divisors (1145400204).

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

778871796 is a wasteful number, since it uses less digits than its factorization.

778871796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3818023 (or 3818021 counting only the distinct ones).

The product of its digits is 8297856, while the sum is 60.

The square root of 778871796 is about 27908.2746869096. The cubic root of 778871796 is about 920.0723777336.

The spelling of 778871796 in words is "seven hundred seventy-eight million, eight hundred seventy-one thousand, seven hundred ninety-six".