13206709 has 2 divisors, whose sum is σ = 13206710. Its totient is φ = 13206708.

The previous prime is 13206707. The next prime is 13206727. The reversal of 13206709 is 90760231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7006609 + 6200100 = 2647^2 + 2490^2 .

It is a cyclic number.

It is not a de Polignac number, because 13206709 - 2¹ = 13206707 is a prime.

It is a super-2 number, since 2×13206709² = 348834325221362, which contains 22 as substring.

Together with 13206707, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13206707) 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 as a sum of consecutive naturals, namely, 6603354 + 6603355.

It is an arithmetic number, because the mean of its divisors is an integer number (6603355).

Almost surely, 2^13206709 is an apocalyptic number.

It is an amenable number.

13206709 is a deficient number, since it is larger than the sum of its proper divisors (1).

13206709 is an equidigital number, since it uses as much as digits as its factorization.

13206709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 13206709 is about 3634.1036033663. The cubic root of 13206709 is about 236.3731826833.

The spelling of 13206709 in words is "thirteen million, two hundred six thousand, seven hundred nine".