12993587 has 4 divisors (see below), whose sum is σ = 13677480. Its totient is φ = 12309696.

The previous prime is 12993571. The next prime is 12993599. The reversal of 12993587 is 78539921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12993587 - 2⁴ = 12993571 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (12993887) 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, 341918 + ... + 341955.

It is an arithmetic number, because the mean of its divisors is an integer number (3419370).

Almost surely, 2^12993587 is an apocalyptic number.

12993587 is a deficient number, since it is larger than the sum of its proper divisors (683893).

12993587 is an equidigital number, since it uses as much as digits as its factorization.

12993587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683892.

The product of its digits is 136080, while the sum is 44.

The square root of 12993587 is about 3604.6618426699. The cubic root of 12993587 is about 235.0947980296.

The spelling of 12993587 in words is "twelve million, nine hundred ninety-three thousand, five hundred eighty-seven".