65589649 has 2 divisors, whose sum is σ = 65589650. Its totient is φ = 65589648.

The previous prime is 65589637. The next prime is 65589731. The reversal of 65589649 is 94698556.

65589649 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., 65092624 + 497025 = 8068^2 + 705^2 .

It is a cyclic number.

It is not a de Polignac number, because 65589649 - 2⁵ = 65589617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65589596 and 65589605.

It is not a weakly prime, because it can be changed into another prime (65509649) 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, 32794824 + 32794825.

It is an arithmetic number, because the mean of its divisors is an integer number (32794825).

Almost surely, 2^65589649 is an apocalyptic number.

It is an amenable number.

65589649 is a deficient number, since it is larger than the sum of its proper divisors (1).

65589649 is an equidigital number, since it uses as much as digits as its factorization.

65589649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2332800, while the sum is 52.

The square root of 65589649 is about 8098.7436680018. The cubic root of 65589649 is about 403.2847214292.

The spelling of 65589649 in words is "sixty-five million, five hundred eighty-nine thousand, six hundred forty-nine".