65009009 has 8 divisors (see below), whose sum is σ = 70076160. Its totient is φ = 59951376.

The previous prime is 65008997. The next prime is 65009011. The reversal of 65009009 is 90090056.

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 65009009 - 2⁸ = 65008753 is a prime.

It is a Duffinian number.

65009009 is a modest number, since divided by 9009 gives 65 as remainder.

It is not an unprimeable number, because it can be changed into a prime (65009029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18944 + ... + 22110.

It is an arithmetic number, because the mean of its divisors is an integer number (8759520).

Almost surely, 2^65009009 is an apocalyptic number.

It is an amenable number.

65009009 is a deficient number, since it is larger than the sum of its proper divisors (5067151).

65009009 is a wasteful number, since it uses less digits than its factorization.

65009009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4759.

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 65009009 is about 8062.8164434024. The cubic root of 65009009 is about 402.0911507538.

The spelling of 65009009 in words is "sixty-five million, nine thousand, nine".