879078565 has 4 divisors (see below), whose sum is σ = 1054894284. Its totient is φ = 703262848.

The previous prime is 879078547. The next prime is 879078587. The reversal of 879078565 is 565870978.

879078565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 326922561 + 552156004 = 18081^2 + 23498^2 .

It is a cyclic number.

It is not a de Polignac number, because 879078565 - 2¹⁹ = 878554277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87907852 + ... + 87907861.

It is an arithmetic number, because the mean of its divisors is an integer number (263723571).

Almost surely, 2^879078565 is an apocalyptic number.

It is an amenable number.

879078565 is a deficient number, since it is larger than the sum of its proper divisors (175815719).

879078565 is a wasteful number, since it uses less digits than its factorization.

879078565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175815718.

The product of its (nonzero) digits is 4233600, while the sum is 55.

The square root of 879078565 is about 29649.2590969825. The cubic root of 879078565 is about 957.9493862757.

The spelling of 879078565 in words is "eight hundred seventy-nine million, seventy-eight thousand, five hundred sixty-five".