689562589 has 4 divisors (see below), whose sum is σ = 697870656. Its totient is φ = 681254524.

The previous prime is 689562583. The next prime is 689562617. The reversal of 689562589 is 985265986.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 985265986 = 2 ⋅492632993.

It is a cyclic number.

It is not a de Polignac number, because 689562589 - 2³ = 689562581 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 (689562581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4153909 + ... + 4154074.

It is an arithmetic number, because the mean of its divisors is an integer number (174467664).

Almost surely, 2^689562589 is an apocalyptic number.

It is an amenable number.

689562589 is a deficient number, since it is larger than the sum of its proper divisors (8308067).

689562589 is an equidigital number, since it uses as much as digits as its factorization.

689562589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8308066.

The product of its digits is 9331200, while the sum is 58.

The square root of 689562589 is about 26259.5237770985. The cubic root of 689562589 is about 883.4688278053.

The spelling of 689562589 in words is "six hundred eighty-nine million, five hundred sixty-two thousand, five hundred eighty-nine".