878987 has 2 divisors, whose sum is σ = 878988. Its totient is φ = 878986.

The previous prime is 878957. The next prime is 878989. The reversal of 878987 is 789878.

878987 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 878987 - 2¹² = 874891 is a prime.

Together with 878989, it forms a pair of twin primes.

It is a Chen prime.

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

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 878987.

It is not a weakly prime, because it can be changed into another prime (878989) by changing a digit.

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 as a sum of consecutive naturals, namely, 439493 + 439494.

It is an arithmetic number, because the mean of its divisors is an integer number (439494).

2⁸⁷⁸⁹⁸⁷ is an apocalyptic number.

878987 is a deficient number, since it is larger than the sum of its proper divisors (1).

878987 is an equidigital number, since it uses as much as digits as its factorization.

878987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 47.

The square root of 878987 is about 937.5430656775. The cubic root of 878987 is about 95.7916125054.

It can be divided in two parts, 878 and 987, that multiplied together give a triangular number (866586 = T₁₃₁₆).

The spelling of 878987 in words is "eight hundred seventy-eight thousand, nine hundred eighty-seven".