65639085 has 16 divisors (see below), whose sum is σ = 105437376. Its totient is φ = 34869248.

The previous prime is 65639083. The next prime is 65639087. The reversal of 65639085 is 58093656.

It is an interprime number because it is at equal distance from previous prime (65639083) and next prime (65639087).

It is a cyclic number.

It is not a de Polignac number, because 65639085 - 2¹ = 65639083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65639081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4659 + ... + 12368.

It is an arithmetic number, because the mean of its divisors is an integer number (6589836).

Almost surely, 2^65639085 is an apocalyptic number.

It is an amenable number.

65639085 is a deficient number, since it is larger than the sum of its proper divisors (39798291).

65639085 is a wasteful number, since it uses less digits than its factorization.

65639085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17292.

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 65639085 is about 8101.7951714419. The cubic root of 65639085 is about 403.3860167656.

The spelling of 65639085 in words is "sixty-five million, six hundred thirty-nine thousand, eighty-five".