878565878 has 8 divisors (see below), whose sum is σ = 1318239120. Its totient is φ = 439152840.

The previous prime is 878565767. The next prime is 878565887.

It is a happy number.

878565878 is nontrivially palindromic in base 10.

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

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 878565878.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 56378 + ... + 70253.

It is an arithmetic number, because the mean of its divisors is an integer number (164779890).

Almost surely, 2^878565878 is an apocalyptic number.

878565878 is a deficient number, since it is larger than the sum of its proper divisors (439673242).

878565878 is a wasteful number, since it uses less digits than its factorization.

878565878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130102.

The product of its digits is 30105600, while the sum is 62.

The square root of 878565878 is about 29640.6119707404. The cubic root of 878565878 is about 957.7631216556.

The spelling of 878565878 in words is "eight hundred seventy-eight million, five hundred sixty-five thousand, eight hundred seventy-eight".