709585 has 4 divisors (see below), whose sum is σ = 851508. Its totient is φ = 567664.

The previous prime is 709561. The next prime is 709589. The reversal of 709585 is 585907.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 585907 = 7 ⋅83701.

It can be written as a sum of positive squares in 2 ways, for example, as 294849 + 414736 = 543^2 + 644^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-709585 is a prime.

It is a Duffinian number.

709585 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 709585.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (709589) 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 3 ways as a sum of consecutive naturals, for example, 70954 + ... + 70963.

It is an arithmetic number, because the mean of its divisors is an integer number (212877).

2⁷⁰⁹⁵⁸⁵ is an apocalyptic number.

It is an amenable number.

709585 is a deficient number, since it is larger than the sum of its proper divisors (141923).

709585 is a wasteful number, since it uses less digits than its factorization.

709585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141922.

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 709585 is about 842.3686841283. The cubic root of 709585 is about 89.1938291293.

The spelling of 709585 in words is "seven hundred nine thousand, five hundred eighty-five".