878998 has 8 divisors (see below), whose sum is σ = 1324008. Its totient is φ = 437664.

The previous prime is 878989. The next prime is 879001. The reversal of 878998 is 899878.

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

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

878998 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211 + ... + 1342.

It is an arithmetic number, because the mean of its divisors is an integer number (165501).

2⁸⁷⁸⁹⁹⁸ is an apocalyptic number.

878998 is a deficient number, since it is larger than the sum of its proper divisors (445010).

878998 is a wasteful number, since it uses less digits than its factorization.

878998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1838.

The product of its digits is 290304, while the sum is 49.

The square root of 878998 is about 937.5489320563. The cubic root of 878998 is about 95.7920120954.

The spelling of 878998 in words is "eight hundred seventy-eight thousand, nine hundred ninety-eight".