705589 has 4 divisors (see below), whose sum is σ = 718956. Its totient is φ = 692224.

The previous prime is 705559. The next prime is 705613. The reversal of 705589 is 985507.

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 380689 + 324900 = 617^2 + 570^2 .

It is a 6-Lehmer number, since φ(705589) divides (705589-1)⁶.

It is a cyclic number.

It is not a de Polignac number, because 705589 - 2⁷ = 705461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (705559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6604 + ... + 6709.

It is an arithmetic number, because the mean of its divisors is an integer number (179739).

2⁷⁰⁵⁵⁸⁹ is an apocalyptic number.

It is an amenable number.

705589 is a deficient number, since it is larger than the sum of its proper divisors (13367).

705589 is a wasteful number, since it uses less digits than its factorization.

705589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13366.

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

The square root of 705589 is about 839.9934523554. The cubic root of 705589 is about 89.0260833368.

The spelling of 705589 in words is "seven hundred five thousand, five hundred eighty-nine".