65683909 has 2 divisors, whose sum is σ = 65683910. Its totient is φ = 65683908.

The previous prime is 65683901. The next prime is 65683951. The reversal of 65683909 is 90938656.

65683909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65561409 + 122500 = 8097^2 + 350^2 .

It is a cyclic number.

It is not a de Polignac number, because 65683909 - 2³ = 65683901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65683901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32841954 + 32841955.

It is an arithmetic number, because the mean of its divisors is an integer number (32841955).

Almost surely, 2^65683909 is an apocalyptic number.

It is an amenable number.

65683909 is a deficient number, since it is larger than the sum of its proper divisors (1).

65683909 is an equidigital number, since it uses as much as digits as its factorization.

65683909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 65683909 is about 8104.5609998321. The cubic root of 65683909 is about 403.4778180684.

The spelling of 65683909 in words is "sixty-five million, six hundred eighty-three thousand, nine hundred nine".