878768913 has 24 divisors (see below), whose sum is σ = 1363660704. Its totient is φ = 501255040.

The previous prime is 878768887. The next prime is 878768929. The reversal of 878768913 is 319867878.

It is not a de Polignac number, because 878768913 - 2¹⁴ = 878752529 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (878768993) 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 23 ways as a sum of consecutive naturals, for example, 65031 + ... + 77372.

It is an arithmetic number, because the mean of its divisors is an integer number (56819196).

Almost surely, 2^878768913 is an apocalyptic number.

It is an amenable number.

878768913 is a deficient number, since it is larger than the sum of its proper divisors (484891791).

878768913 is a wasteful number, since it uses less digits than its factorization.

878768913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142445 (or 142434 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 57.

The square root of 878768913 is about 29644.0367190435. The cubic root of 878768913 is about 957.8368950866.

The spelling of 878768913 in words is "eight hundred seventy-eight million, seven hundred sixty-eight thousand, nine hundred thirteen".