13730705 has 8 divisors (see below), whose sum is σ = 16497000. Its totient is φ = 10971136.

The previous prime is 13730699. The next prime is 13730719. The reversal of 13730705 is 50703731.

It can be written as a sum of positive squares in 4 ways, for example, as 305809 + 13424896 = 553^2 + 3664^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13730705 - 2²⁰ = 12682129 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6071 + ... + 8019.

It is an arithmetic number, because the mean of its divisors is an integer number (2062125).

Almost surely, 2^13730705 is an apocalyptic number.

It is an amenable number.

13730705 is a deficient number, since it is larger than the sum of its proper divisors (2766295).

13730705 is a wasteful number, since it uses less digits than its factorization.

13730705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3363.

The product of its (nonzero) digits is 2205, while the sum is 26.

The square root of 13730705 is about 3705.4965929009. The cubic root of 13730705 is about 239.4588792479.

The spelling of 13730705 in words is "thirteen million, seven hundred thirty thousand, seven hundred five".