13650709 has 2 divisors, whose sum is σ = 13650710. Its totient is φ = 13650708.

The previous prime is 13650701. The next prime is 13650787. The reversal of 13650709 is 90705631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11881809 + 1768900 = 3447^2 + 1330^2 .

It is a cyclic number.

It is not a de Polignac number, because 13650709 - 2³ = 13650701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13650701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6825354 + 6825355.

It is an arithmetic number, because the mean of its divisors is an integer number (6825355).

Almost surely, 2^13650709 is an apocalyptic number.

It is an amenable number.

13650709 is a deficient number, since it is larger than the sum of its proper divisors (1).

13650709 is an equidigital number, since it uses as much as digits as its factorization.

13650709 is an evil number, because the sum of its binary digits is even.

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

The square root of 13650709 is about 3694.6865902266. The cubic root of 13650709 is about 238.9929387572.

The spelling of 13650709 in words is "thirteen million, six hundred fifty thousand, seven hundred nine".