870079 has 4 divisors (see below), whose sum is σ = 994384. Its totient is φ = 745776.

The previous prime is 870059. The next prime is 870083. The reversal of 870079 is 970078.

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

It is a cyclic number.

It is not a de Polignac number, because 870079 - 2⁵ = 870047 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 870079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870049) 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 in 3 ways as a sum of consecutive naturals, for example, 62142 + ... + 62155.

It is an arithmetic number, because the mean of its divisors is an integer number (248596).

2⁸⁷⁰⁰⁷⁹ is an apocalyptic number.

870079 is a deficient number, since it is larger than the sum of its proper divisors (124305).

870079 is a wasteful number, since it uses less digits than its factorization.

870079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124304.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 870079 is about 932.7802527927. The cubic root of 870079 is about 95.4669165303.

Subtracting 870079 from its reverse (970078), we obtain a palindrome (99999).

The spelling of 870079 in words is "eight hundred seventy thousand, seventy-nine".