65004609 has 4 divisors (see below), whose sum is σ = 86672816. Its totient is φ = 43336404.

The previous prime is 65004593. The next prime is 65004629. The reversal of 65004609 is 90640056.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 65004609 - 2⁴ = 65004593 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65004629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10834099 + ... + 10834104.

It is an arithmetic number, because the mean of its divisors is an integer number (21668204).

Almost surely, 2^65004609 is an apocalyptic number.

It is an amenable number.

65004609 is a deficient number, since it is larger than the sum of its proper divisors (21668207).

65004609 is a wasteful number, since it uses less digits than its factorization.

65004609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21668206.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 65004609 is about 8062.5435812776. The cubic root of 65004609 is about 402.0820789805.

The spelling of 65004609 in words is "sixty-five million, four thousand, six hundred nine".