13866497 has 2 divisors, whose sum is σ = 13866498. Its totient is φ = 13866496.

The previous prime is 13866491. The next prime is 13866499. The reversal of 13866497 is 79466831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7230721 + 6635776 = 2689^2 + 2576^2 .

It is an emirp because it is prime and its reverse (79466831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13866497 - 2¹⁰ = 13865473 is a prime.

Together with 13866499, 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 (13866491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6933248 + 6933249.

It is an arithmetic number, because the mean of its divisors is an integer number (6933249).

Almost surely, 2^13866497 is an apocalyptic number.

It is an amenable number.

13866497 is a deficient number, since it is larger than the sum of its proper divisors (1).

13866497 is an equidigital number, since it uses as much as digits as its factorization.

13866497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 44.

The square root of 13866497 is about 3723.7745635309. The cubic root of 13866497 is about 240.2456801324.

The spelling of 13866497 in words is "thirteen million, eight hundred sixty-six thousand, four hundred ninety-seven".