68589 has 6 divisors (see below), whose sum is σ = 99086. Its totient is φ = 45720.
The previous prime is 68581. The next prime is 68597. The reversal of 68589 is 98586.
It is an interprime number because it is at equal distance from previous prime (68581) and next prime (68597).
It can be written as a sum of positive squares in only one way, i.e., 66564 + 2025 = 258^2 + 45^2 .
It is not a de Polignac number, because 68589 - 23 = 68581 is a prime.
It is a Duffinian number.
68589 is a lucky number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68581) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3802 + ... + 3819.
268589 is an apocalyptic number.
It is an amenable number.
68589 is a deficient number, since it is larger than the sum of its proper divisors (30497).
68589 is a wasteful number, since it uses less digits than its factorization.
68589 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 7627 (or 7624 counting only the distinct ones).
The product of its digits is 17280, while the sum is 36.
The square root of 68589 is about 261.8950171347. The cubic root of 68589 is about 40.9340601775.
The spelling of 68589 in words is "sixty-eight thousand, five hundred eighty-nine".
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