13709065 has 4 divisors (see below), whose sum is σ = 16450884. Its totient is φ = 10967248.

The previous prime is 13709057. The next prime is 13709117. The reversal of 13709065 is 56090731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56090731 = 1873 ⋅29947.

It can be written as a sum of positive squares in 2 ways, for example, as 5322249 + 8386816 = 2307^2 + 2896^2 .

It is a cyclic number.

It is not a de Polignac number, because 13709065 - 2³ = 13709057 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 1370902 + ... + 1370911.

It is an arithmetic number, because the mean of its divisors is an integer number (4112721).

Almost surely, 2^13709065 is an apocalyptic number.

It is an amenable number.

13709065 is a deficient number, since it is larger than the sum of its proper divisors (2741819).

13709065 is an equidigital number, since it uses as much as digits as its factorization.

13709065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2741818.

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 13709065 is about 3702.5754550043. The cubic root of 13709065 is about 239.3330149945. Note that the first 3 decimals are identical.

Adding to 13709065 its reverse (56090731), we get a palindrome (69799796).

The spelling of 13709065 in words is "thirteen million, seven hundred nine thousand, sixty-five".