878585 has 8 divisors (see below), whose sum is σ = 1060800. Its totient is φ = 698544.

The previous prime is 878573. The next prime is 878593. The reversal of 878585 is 585878.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 878585 - 2¹⁶ = 813049 is a prime.

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

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 878585.

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, 554 + ... + 1436.

It is an arithmetic number, because the mean of its divisors is an integer number (132600).

2⁸⁷⁸⁵⁸⁵ is an apocalyptic number.

It is an amenable number.

878585 is a deficient number, since it is larger than the sum of its proper divisors (182215).

878585 is a wasteful number, since it uses less digits than its factorization.

878585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087.

The product of its digits is 89600, while the sum is 41.

The square root of 878585 is about 937.3286510077. The cubic root of 878585 is about 95.7770070182. Note that the first 3 decimals are identical.

The spelling of 878585 in words is "eight hundred seventy-eight thousand, five hundred eighty-five".