878546286864 has 135 divisors (see below), whose sum is σ = 2595557356119. Its totient is φ = 277368183360.

The previous prime is 878546286853. The next prime is 878546286901. The reversal of 878546286864 is 468682645878.

The square root of 878546286864 is 937308.

It is a perfect power (a square), and thus also a powerful number.

878546286864 is a `hidden beast` number, since 8 + 7 + 8 + 5 + 462 + 86 + 86 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 878546286792 and 878546286801.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 213704169 + ... + 213708279.

Almost surely, 2^878546286864 is an apocalyptic number.

878546286864 is the 937308-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 878546286864

878546286864 is an abundant number, since it is smaller than the sum of its proper divisors (1717011069255).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

878546286864 is an equidigital number, since it uses as much as digits as its factorization.

878546286864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8274 (or 4135 counting only the distinct ones).

The product of its digits is 990904320, while the sum is 72.

The spelling of 878546286864 in words is "eight hundred seventy-eight billion, five hundred forty-six million, two hundred eighty-six thousand, eight hundred sixty-four".