14686517 has 2 divisors, whose sum is σ = 14686518. Its totient is φ = 14686516.

The previous prime is 14686493. The next prime is 14686519. The reversal of 14686517 is 71568641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8491396 + 6195121 = 2914^2 + 2489^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14686517 is a prime.

Together with 14686519, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 7.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14686519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7343258 + 7343259.

It is an arithmetic number, because the mean of its divisors is an integer number (7343259).

Almost surely, 2^14686517 is an apocalyptic number.

It is an amenable number.

14686517 is a deficient number, since it is larger than the sum of its proper divisors (1).

14686517 is an equidigital number, since it uses as much as digits as its factorization.

14686517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 38.

The square root of 14686517 is about 3832.2991793439. The cubic root of 14686517 is about 244.8910636065.

The spelling of 14686517 in words is "fourteen million, six hundred eighty-six thousand, five hundred seventeen".