65604545 has 4 divisors (see below), whose sum is σ = 78725460. Its totient is φ = 52483632.

The previous prime is 65604509. The next prime is 65604557. The reversal of 65604545 is 54540656.

65604545 is nontrivially palindromic in base 15.

65604545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51825601 + 13778944 = 7199^2 + 3712^2 .

It is a cyclic number.

It is not a de Polignac number, because 65604545 - 2⁸ = 65604289 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 3 ways as a sum of consecutive naturals, for example, 6560450 + ... + 6560459.

It is an arithmetic number, because the mean of its divisors is an integer number (19681365).

Almost surely, 2^65604545 is an apocalyptic number.

It is an amenable number.

65604545 is a deficient number, since it is larger than the sum of its proper divisors (13120915).

65604545 is a wasteful number, since it uses less digits than its factorization.

65604545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13120914.

The product of its (nonzero) digits is 72000, while the sum is 35.

The square root of 65604545 is about 8099.6632646055. The cubic root of 65604545 is about 403.3152489824.

The spelling of 65604545 in words is "sixty-five million, six hundred four thousand, five hundred forty-five".