878285 has 8 divisors (see below), whose sum is σ = 1059480. Its totient is φ = 698944.

The previous prime is 878279. The next prime is 878287. The reversal of 878285 is 582878.

It can be written as a sum of positive squares in 4 ways, for example, as 5929 + 872356 = 77^2 + 934^2 .

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 878285 - 2⁶ = 878221 is a prime.

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 878285.

It is not an unprimeable number, because it can be changed into a prime (878287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1019 + ... + 1671.

It is an arithmetic number, because the mean of its divisors is an integer number (132435).

2⁸⁷⁸²⁸⁵ is an apocalyptic number.

It is an amenable number.

878285 is a deficient number, since it is larger than the sum of its proper divisors (181195).

878285 is a wasteful number, since it uses less digits than its factorization.

878285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927.

The product of its digits is 35840, while the sum is 38.

The square root of 878285 is about 937.1686080957. The cubic root of 878285 is about 95.7661044976.

The spelling of 878285 in words is "eight hundred seventy-eight thousand, two hundred eighty-five".