878081 has 4 divisors (see below), whose sum is σ = 883632. Its totient is φ = 872532.

The previous prime is 878077. The next prime is 878083. The reversal of 878081 is 180878.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 180878 = 2 ⋅90439.

It is a cyclic number.

It is not a de Polignac number, because 878081 - 2² = 878077 is a prime.

It is a super-2 number, since 2×878081² = 1542052485122, which contains 22 as substring.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 878081.

It is not an unprimeable number, because it can be changed into a prime (878083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2531 + ... + 2856.

It is an arithmetic number, because the mean of its divisors is an integer number (220908).

2⁸⁷⁸⁰⁸¹ is an apocalyptic number.

It is an amenable number.

878081 is a deficient number, since it is larger than the sum of its proper divisors (5551).

878081 is a wasteful number, since it uses less digits than its factorization.

878081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5550.

The product of its (nonzero) digits is 3584, while the sum is 32.

The square root of 878081 is about 937.0597633022. The cubic root of 878081 is about 95.7586893654.

The spelling of 878081 in words is "eight hundred seventy-eight thousand, eighty-one".