65489938 has 16 divisors (see below), whose sum is σ = 100389240. Its totient is φ = 32034816.

The previous prime is 65489911. The next prime is 65489953. The reversal of 65489938 is 83998456.

It is a happy number.

65489938 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 34609689 + 30880249 = 5883^2 + 5557^2 .

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 15370 + ... + 19162.

Almost surely, 2^65489938 is an apocalyptic number.

65489938 is a deficient number, since it is larger than the sum of its proper divisors (34899302).

65489938 is a wasteful number, since it uses less digits than its factorization.

65489938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3981.

The product of its digits is 1866240, while the sum is 52.

The square root of 65489938 is about 8092.5853718079. The cubic root of 65489938 is about 403.0802566610.

The spelling of 65489938 in words is "sixty-five million, four hundred eighty-nine thousand, nine hundred thirty-eight".