65539505 has 16 divisors (see below), whose sum is σ = 84142800. Its totient is φ = 48832512.

The previous prime is 65539499. The next prime is 65539583. The reversal of 65539505 is 50593556.

It is a happy number.

65539505 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 8 ways, for example, as 107584 + 65431921 = 328^2 + 8089^2 .

It is a cyclic number.

It is not a de Polignac number, because 65539505 - 2⁸ = 65539249 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 4271 + ... + 12219.

It is an arithmetic number, because the mean of its divisors is an integer number (5258925).

Almost surely, 2^65539505 is an apocalyptic number.

It is an amenable number.

65539505 is a deficient number, since it is larger than the sum of its proper divisors (18603295).

65539505 is a wasteful number, since it uses less digits than its factorization.

65539505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8068.

The product of its (nonzero) digits is 101250, while the sum is 38.

The square root of 65539505 is about 8095.6472872773. The cubic root of 65539505 is about 403.1819233761.

The spelling of 65539505 in words is "sixty-five million, five hundred thirty-nine thousand, five hundred five".