13705999 has 16 divisors (see below), whose sum is σ = 15114240. Its totient is φ = 12386880.

The previous prime is 13705997. The next prime is 13706023. The reversal of 13705999 is 99950731.

13705999 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13705999 - 2¹ = 13705997 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 (13705997) 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 in 15 ways as a sum of consecutive naturals, for example, 33307 + ... + 33715.

It is an arithmetic number, because the mean of its divisors is an integer number (944640).

Almost surely, 2^13705999 is an apocalyptic number.

13705999 is a deficient number, since it is larger than the sum of its proper divisors (1408241).

13705999 is a wasteful number, since it uses less digits than its factorization.

13705999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510.

The product of its (nonzero) digits is 76545, while the sum is 43.

The square root of 13705999 is about 3702.1613957255. The cubic root of 13705999 is about 239.3151715764.

The spelling of 13705999 in words is "thirteen million, seven hundred five thousand, nine hundred ninety-nine".