878719 has 2 divisors, whose sum is σ = 878720. Its totient is φ = 878718.

The previous prime is 878699. The next prime is 878737. The reversal of 878719 is 917878.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 878719 - 2¹⁵ = 845951 is a prime.

It is a super-2 number, since 2×878719² = 1544294161922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (878749) 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, 439359 + 439360.

It is an arithmetic number, because the mean of its divisors is an integer number (439360).

2⁸⁷⁸⁷¹⁹ is an apocalyptic number.

878719 is a deficient number, since it is larger than the sum of its proper divisors (1).

878719 is an equidigital number, since it uses as much as digits as its factorization.

878719 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28224, while the sum is 40.

The square root of 878719 is about 937.4001280136. The cubic root of 878719 is about 95.7818760088.

The spelling of 878719 in words is "eight hundred seventy-eight thousand, seven hundred nineteen".