878505878 has 16 divisors (see below), whose sum is σ = 1332385200. Its totient is φ = 434388000.

The previous prime is 878505853. The next prime is 878505919.

It is a happy number.

878505878 is nontrivially palindromic in base 10.

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

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, 212273 + ... + 216371.

It is an arithmetic number, because the mean of its divisors is an integer number (83274075).

Almost surely, 2^878505878 is an apocalyptic number.

878505878 is a deficient number, since it is larger than the sum of its proper divisors (453879322).

878505878 is a wasteful number, since it uses less digits than its factorization.

878505878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5263.

The product of its (nonzero) digits is 5017600, while the sum is 56.

The square root of 878505878 is about 29639.5998286077. The cubic root of 878505878 is about 957.7413182837.

The spelling of 878505878 in words is "eight hundred seventy-eight million, five hundred five thousand, eight hundred seventy-eight".