13705663 has 4 divisors (see below), whose sum is σ = 13930408. Its totient is φ = 13480920.

The previous prime is 13705633. The next prime is 13705667. The reversal of 13705663 is 36650731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36650731 = 13 ⋅2819287.

It is a cyclic number.

It is not a de Polignac number, because 13705663 - 2¹³ = 13697471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13705667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112281 + ... + 112402.

It is an arithmetic number, because the mean of its divisors is an integer number (3482602).

Almost surely, 2^13705663 is an apocalyptic number.

13705663 is a deficient number, since it is larger than the sum of its proper divisors (224745).

13705663 is an equidigital number, since it uses as much as digits as its factorization.

13705663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224744.

The product of its (nonzero) digits is 11340, while the sum is 31.

The square root of 13705663 is about 3702.1160165505. The cubic root of 13705663 is about 239.3132159715.

The spelling of 13705663 in words is "thirteen million, seven hundred five thousand, six hundred sixty-three".