13705685 has 16 divisors (see below), whose sum is σ = 19256832. Its totient is φ = 9168000.

The previous prime is 13705673. The next prime is 13705697. The reversal of 13705685 is 58650731.

It is an interprime number because it is at equal distance from previous prime (13705673) and next prime (13705697).

It is not a de Polignac number, because 13705685 - 2¹⁸ = 13443541 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 3341 + ... + 6210.

It is an arithmetic number, because the mean of its divisors is an integer number (1203552).

Almost surely, 2^13705685 is an apocalyptic number.

It is an amenable number.

13705685 is a deficient number, since it is larger than the sum of its proper divisors (5551147).

13705685 is an equidigital number, since it uses as much as digits as its factorization.

13705685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9604.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 13705685 is about 3702.1189878231. The cubic root of 13705685 is about 239.3133440181.

The spelling of 13705685 in words is "thirteen million, seven hundred five thousand, six hundred eighty-five".