13287587 has 2 divisors, whose sum is σ = 13287588. Its totient is φ = 13287586.

The previous prime is 13287541. The next prime is 13287607. The reversal of 13287587 is 78578231.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13287587 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13287787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6643793 + 6643794.

It is an arithmetic number, because the mean of its divisors is an integer number (6643794).

Almost surely, 2^13287587 is an apocalyptic number.

13287587 is a deficient number, since it is larger than the sum of its proper divisors (1).

13287587 is an equidigital number, since it uses as much as digits as its factorization.

13287587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94080, while the sum is 41.

The square root of 13287587 is about 3645.2142598207. The cubic root of 13287587 is about 236.8547181786.

The spelling of 13287587 in words is "thirteen million, two hundred eighty-seven thousand, five hundred eighty-seven".