65471689 has 2 divisors, whose sum is σ = 65471690. Its totient is φ = 65471688.

The previous prime is 65471687. The next prime is 65471717. The reversal of 65471689 is 98617456.

65471689 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., 57881664 + 7590025 = 7608^2 + 2755^2 .

It is a cyclic number.

It is not a de Polignac number, because 65471689 - 2¹ = 65471687 is a prime.

Together with 65471687, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65471687) 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, 32735844 + 32735845.

It is an arithmetic number, because the mean of its divisors is an integer number (32735845).

Almost surely, 2^65471689 is an apocalyptic number.

It is an amenable number.

65471689 is a deficient number, since it is larger than the sum of its proper divisors (1).

65471689 is an equidigital number, since it uses as much as digits as its factorization.

65471689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 46.

The square root of 65471689 is about 8091.4577796587. The cubic root of 65471689 is about 403.0428132756.

The spelling of 65471689 in words is "sixty-five million, four hundred seventy-one thousand, six hundred eighty-nine".