13087589 has 4 divisors (see below), whose sum is σ = 13098156. Its totient is φ = 13077024.

The previous prime is 13087583. The next prime is 13087601. The reversal of 13087589 is 98578031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 98578031 = 193 ⋅510767.

It can be written as a sum of positive squares in 2 ways, for example, as 10660225 + 2427364 = 3265^2 + 1558^2 .

It is a cyclic number.

It is not a de Polignac number, because 13087589 - 2¹² = 13083493 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 (13087583) 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, 3134 + ... + 5999.

It is an arithmetic number, because the mean of its divisors is an integer number (3274539).

Almost surely, 2^13087589 is an apocalyptic number.

It is an amenable number.

13087589 is a deficient number, since it is larger than the sum of its proper divisors (10567).

13087589 is an equidigital number, since it uses as much as digits as its factorization.

13087589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10566.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 13087589 is about 3617.6772935131. The cubic root of 13087589 is about 235.6603668180.

The spelling of 13087589 in words is "thirteen million, eighty-seven thousand, five hundred eighty-nine".