870591 has 8 divisors (see below), whose sum is σ = 1165104. Its totient is φ = 578240.

The previous prime is 870589. The next prime is 870593. The reversal of 870591 is 195078.

It is an interprime number because it is at equal distance from previous prime (870589) and next prime (870593).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 870591 - 2¹ = 870589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1285 + ... + 1841.

It is an arithmetic number, because the mean of its divisors is an integer number (145638).

2⁸⁷⁰⁵⁹¹ is an apocalyptic number.

870591 is a deficient number, since it is larger than the sum of its proper divisors (294513).

870591 is a wasteful number, since it uses less digits than its factorization.

870591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081.

The product of its (nonzero) digits is 2520, while the sum is 30.

The square root of 870591 is about 933.0546607782. The cubic root of 870591 is about 95.4856387677.

The spelling of 870591 in words is "eight hundred seventy thousand, five hundred ninety-one".