13706305 has 4 divisors (see below), whose sum is σ = 16447572. Its totient is φ = 10965040.

The previous prime is 13706291. The next prime is 13706311. The reversal of 13706305 is 50360731.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2637376 + 11068929 = 1624^2 + 3327^2 .

It is not a de Polignac number, because 13706305 - 2⁹ = 13705793 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13706305.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1370626 + ... + 1370635.

It is an arithmetic number, because the mean of its divisors is an integer number (4111893).

Almost surely, 2^13706305 is an apocalyptic number.

It is an amenable number.

13706305 is a deficient number, since it is larger than the sum of its proper divisors (2741267).

13706305 is an equidigital number, since it uses as much as digits as its factorization.

13706305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2741266.

The product of its (nonzero) digits is 1890, while the sum is 25.

The square root of 13706305 is about 3702.2027227044. The cubic root of 13706305 is about 239.3169525459.

The spelling of 13706305 in words is "thirteen million, seven hundred six thousand, three hundred five".