778006868 has 12 divisors (see below), whose sum is σ = 1364244000. Its totient is φ = 388222872.

The previous prime is 778006849. The next prime is 778006877. The reversal of 778006868 is 868600877.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 192896 + ... + 196887.

It is an arithmetic number, because the mean of its divisors is an integer number (113687000).

Almost surely, 2^778006868 is an apocalyptic number.

It is an amenable number.

778006868 is a deficient number, since it is larger than the sum of its proper divisors (586237132).

778006868 is a wasteful number, since it uses less digits than its factorization.

778006868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390286 (or 390284 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 50.

The square root of 778006868 is about 27892.7744765558. The cubic root of 778006868 is about 919.7316750567.

The spelling of 778006868 in words is "seven hundred seventy-eight million, six thousand, eight hundred sixty-eight".