878668215 has 8 divisors (see below), whose sum is σ = 1405869168. Its totient is φ = 468623040.

The previous prime is 878668213. The next prime is 878668237. The reversal of 878668215 is 512866878.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 878668215 - 2¹ = 878668213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878668213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29288926 + ... + 29288955.

It is an arithmetic number, because the mean of its divisors is an integer number (175733646).

Almost surely, 2^878668215 is an apocalyptic number.

878668215 is a deficient number, since it is larger than the sum of its proper divisors (527200953).

878668215 is a wasteful number, since it uses less digits than its factorization.

878668215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58577889.

The product of its digits is 1290240, while the sum is 51.

The square root of 878668215 is about 29642.3382174888. The cubic root of 878668215 is about 957.8003075596.

The spelling of 878668215 in words is "eight hundred seventy-eight million, six hundred sixty-eight thousand, two hundred fifteen".