878537 has 4 divisors (see below), whose sum is σ = 958416. Its totient is φ = 798660.

The previous prime is 878513. The next prime is 878539. The reversal of 878537 is 735878.

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.

It is a cyclic number.

It is not a de Polignac number, because 878537 - 2¹⁸ = 616393 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 878537.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 878537.

It is not an unprimeable number, because it can be changed into a prime (878539) 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, 39923 + ... + 39944.

It is an arithmetic number, because the mean of its divisors is an integer number (239604).

2⁸⁷⁸⁵³⁷ is an apocalyptic number.

It is an amenable number.

878537 is a deficient number, since it is larger than the sum of its proper divisors (79879).

878537 is a wasteful number, since it uses less digits than its factorization.

878537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79878.

The product of its digits is 47040, while the sum is 38.

The square root of 878537 is about 937.3030459782. The cubic root of 878537 is about 95.7752627817.

The spelling of 878537 in words is "eight hundred seventy-eight thousand, five hundred thirty-seven".