65530289 has 16 divisors (see below), whose sum is σ = 75064320. Its totient is φ = 56625360.

The previous prime is 65530279. The next prime is 65530307. The reversal of 65530289 is 98203556.

It is not a de Polignac number, because 65530289 - 2⁴ = 65530273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65530279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44564 + ... + 46010.

It is an arithmetic number, because the mean of its divisors is an integer number (4691520).

Almost surely, 2^65530289 is an apocalyptic number.

It is an amenable number.

65530289 is a deficient number, since it is larger than the sum of its proper divisors (9534031).

65530289 is a wasteful number, since it uses less digits than its factorization.

65530289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1660.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 65530289 is about 8095.0780725080. The cubic root of 65530289 is about 403.1630243483.

The spelling of 65530289 in words is "sixty-five million, five hundred thirty thousand, two hundred eighty-nine".