778071368 has 16 divisors (see below), whose sum is σ = 1544700780. Its totient is φ = 366151168.

The previous prime is 778071367. The next prime is 778071401. The reversal of 778071368 is 863170877.

It can be written as a sum of positive squares in 2 ways, for example, as 718132804 + 59938564 = 26798^2 + 7742^2 .

It is not an unprimeable number, because it can be changed into a prime (778071367) 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 in 3 ways as a sum of consecutive naturals, for example, 2860421 + ... + 2860692.

Almost surely, 2^778071368 is an apocalyptic number.

It is an amenable number.

778071368 is a deficient number, since it is larger than the sum of its proper divisors (766629412).

778071368 is a wasteful number, since it uses less digits than its factorization.

778071368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5721136 (or 5721132 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 47.

The square root of 778071368 is about 27893.9306660069. The cubic root of 778071368 is about 919.7570908794.

The spelling of 778071368 in words is "seven hundred seventy-eight million, seventy-one thousand, three hundred sixty-eight".