878765678 has 16 divisors (see below), whose sum is σ = 1527093600. Its totient is φ = 371454336.

The previous prime is 878765663. The next prime is 878765687. The reversal of 878765678 is 876567878.

878765678 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

878765678 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 878765678.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428903 + ... + 430946.

It is an arithmetic number, because the mean of its divisors is an integer number (95443350).

Almost surely, 2^878765678 is an apocalyptic number.

878765678 is a deficient number, since it is larger than the sum of its proper divisors (648327922).

878765678 is a wasteful number, since it uses less digits than its factorization.

878765678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859931.

The product of its digits is 31610880, while the sum is 62.

The square root of 878765678 is about 29643.9821548995. The cubic root of 878765678 is about 957.8357197278.

The spelling of 878765678 in words is "eight hundred seventy-eight million, seven hundred sixty-five thousand, six hundred seventy-eight".