878287 has 2 divisors, whose sum is σ = 878288. Its totient is φ = 878286.

The previous prime is 878279. The next prime is 878291. The reversal of 878287 is 782878.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 878287 - 2³ = 878279 is a prime.

878287 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (878387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439143 + 439144.

It is an arithmetic number, because the mean of its divisors is an integer number (439144).

2⁸⁷⁸²⁸⁷ is an apocalyptic number.

878287 is a deficient number, since it is larger than the sum of its proper divisors (1).

878287 is an equidigital number, since it uses as much as digits as its factorization.

878287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50176, while the sum is 40.

The square root of 878287 is about 937.1696751389. The cubic root of 878287 is about 95.7661771893.

The spelling of 878287 in words is "eight hundred seventy-eight thousand, two hundred eighty-seven".