13689587 has 2 divisors, whose sum is σ = 13689588. Its totient is φ = 13689586.

The previous prime is 13689563. The next prime is 13689589. The reversal of 13689587 is 78598631.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13689587 - 2¹⁴ = 13673203 is a prime.

Together with 13689589, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13689589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6844793 + 6844794.

It is an arithmetic number, because the mean of its divisors is an integer number (6844794).

Almost surely, 2^13689587 is an apocalyptic number.

13689587 is a deficient number, since it is larger than the sum of its proper divisors (1).

13689587 is an equidigital number, since it uses as much as digits as its factorization.

13689587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 47.

The square root of 13689587 is about 3699.9441887683. The cubic root of 13689587 is about 239.2196122199.

The spelling of 13689587 in words is "thirteen million, six hundred eighty-nine thousand, five hundred eighty-seven".