13499687 has 2 divisors, whose sum is σ = 13499688. Its totient is φ = 13499686.

The previous prime is 13499677. The next prime is 13499693. The reversal of 13499687 is 78699431.

It is a strong prime.

It is an emirp because it is prime and its reverse (78699431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13499687 - 2⁶ = 13499623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13499627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6749843 + 6749844.

It is an arithmetic number, because the mean of its divisors is an integer number (6749844).

Almost surely, 2^13499687 is an apocalyptic number.

13499687 is a deficient number, since it is larger than the sum of its proper divisors (1).

13499687 is an equidigital number, since it uses as much as digits as its factorization.

13499687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 47.

The square root of 13499687 is about 3674.1920200229. The cubic root of 13499687 is about 238.1083175716.

The spelling of 13499687 in words is "thirteen million, four hundred ninety-nine thousand, six hundred eighty-seven".