778796994 has 16 divisors (see below), whose sum is σ = 1593817632. Its totient is φ = 253561728.

The previous prime is 778796989. The next prime is 778797011. The reversal of 778796994 is 499697877.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1509039 + ... + 1509554.

It is an arithmetic number, because the mean of its divisors is an integer number (99613602).

Almost surely, 2^778796994 is an apocalyptic number.

778796994 is an abundant number, since it is smaller than the sum of its proper divisors (815020638).

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

778796994 is a wasteful number, since it uses less digits than its factorization.

778796994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3018641.

The product of its digits is 48009024, while the sum is 66.

The square root of 778796994 is about 27906.9345145611. The cubic root of 778796994 is about 920.0429225406.

The spelling of 778796994 in words is "seven hundred seventy-eight million, seven hundred ninety-six thousand, nine hundred ninety-four".