65244009 has 8 divisors (see below), whose sum is σ = 87495552. Its totient is φ = 43244240.

The previous prime is 65244001. The next prime is 65244017. The reversal of 65244009 is 90044256.

It is an interprime number because it is at equal distance from previous prime (65244001) and next prime (65244017).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65244009 - 2³ = 65244001 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65244001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62337 + ... + 63374.

It is an arithmetic number, because the mean of its divisors is an integer number (10936944).

Almost surely, 2^65244009 is an apocalyptic number.

It is an amenable number.

65244009 is a deficient number, since it is larger than the sum of its proper divisors (22251543).

65244009 is a wasteful number, since it uses less digits than its factorization.

65244009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125887.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 65244009 is about 8077.3763685989. The cubic root of 65244009 is about 402.5750723491.

The spelling of 65244009 in words is "sixty-five million, two hundred forty-four thousand, nine".