13685297 has 2 divisors, whose sum is σ = 13685298. Its totient is φ = 13685296.

The previous prime is 13685279. The next prime is 13685327. The reversal of 13685297 is 79258631.

Together with previous prime (13685279) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9024016 + 4661281 = 3004^2 + 2159^2 .

It is an emirp because it is prime and its reverse (79258631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13685297 - 2¹⁴ = 13668913 is a prime.

It is not a weakly prime, because it can be changed into another prime (13685257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6842648 + 6842649.

It is an arithmetic number, because the mean of its divisors is an integer number (6842649).

Almost surely, 2^13685297 is an apocalyptic number.

It is an amenable number.

13685297 is a deficient number, since it is larger than the sum of its proper divisors (1).

13685297 is an equidigital number, since it uses as much as digits as its factorization.

13685297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 41.

The square root of 13685297 is about 3699.3644048674. The cubic root of 13685297 is about 239.1946209776.

The spelling of 13685297 in words is "thirteen million, six hundred eighty-five thousand, two hundred ninety-seven".