879705 has 24 divisors (see below), whose sum is σ = 1547208. Its totient is φ = 462336.

The previous prime is 879701. The next prime is 879707. The reversal of 879705 is 507978.

It can be written as a sum of positive squares in 4 ways, for example, as 47961 + 831744 = 219^2 + 912^2 .

It is not a de Polignac number, because 879705 - 2² = 879701 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 879705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (879701) 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 in 23 ways as a sum of consecutive naturals, for example, 4999 + ... + 5171.

It is an arithmetic number, because the mean of its divisors is an integer number (64467).

2⁸⁷⁹⁷⁰⁵ is an apocalyptic number.

It is an amenable number.

879705 is a deficient number, since it is larger than the sum of its proper divisors (667503).

879705 is a wasteful number, since it uses less digits than its factorization.

879705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297 (or 294 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The square root of 879705 is about 937.9259032568. The cubic root of 879705 is about 95.8176878471.

The spelling of 879705 in words is "eight hundred seventy-nine thousand, seven hundred five".