13538687 has 2 divisors, whose sum is σ = 13538688. Its totient is φ = 13538686.

The previous prime is 13538683. The next prime is 13538729. The reversal of 13538687 is 78683531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13538687 - 2² = 13538683 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13538683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6769343 + 6769344.

It is an arithmetic number, because the mean of its divisors is an integer number (6769344).

Almost surely, 2^13538687 is an apocalyptic number.

13538687 is a deficient number, since it is larger than the sum of its proper divisors (1).

13538687 is an equidigital number, since it uses as much as digits as its factorization.

13538687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 41.

The square root of 13538687 is about 3679.4954817203. The cubic root of 13538687 is about 238.3373919251.

The spelling of 13538687 in words is "thirteen million, five hundred thirty-eight thousand, six hundred eighty-seven".