13665343 has 2 divisors, whose sum is σ = 13665344. Its totient is φ = 13665342.

The previous prime is 13665317. The next prime is 13665347. The reversal of 13665343 is 34356631.

It is a strong prime.

It is an emirp because it is prime and its reverse (34356631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13665343 - 2¹³ = 13657151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13665347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6832671 + 6832672.

It is an arithmetic number, because the mean of its divisors is an integer number (6832672).

Almost surely, 2^13665343 is an apocalyptic number.

13665343 is a deficient number, since it is larger than the sum of its proper divisors (1).

13665343 is an equidigital number, since it uses as much as digits as its factorization.

13665343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 31.

The square root of 13665343 is about 3696.6664712955. Note that the first 3 decimals coincide. The cubic root of 13665343 is about 239.0783109682.

The spelling of 13665343 in words is "thirteen million, six hundred sixty-five thousand, three hundred forty-three".