65530239 has 8 divisors (see below), whose sum is σ = 87697152. Its totient is φ = 43525080.

The previous prime is 65530211. The next prime is 65530247. The reversal of 65530239 is 93203556.

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

It is a de Polignac number, because none of the positive numbers 2^k-65530239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65530279) 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, 39489 + ... + 41114.

It is an arithmetic number, because the mean of its divisors is an integer number (10962144).

Almost surely, 2^65530239 is an apocalyptic number.

65530239 is a deficient number, since it is larger than the sum of its proper divisors (22166913).

65530239 is a wasteful number, since it uses less digits than its factorization.

65530239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80877.

The product of its (nonzero) digits is 24300, while the sum is 33.

The square root of 65530239 is about 8095.0749842111. The cubic root of 65530239 is about 403.1629218097.

The spelling of 65530239 in words is "sixty-five million, five hundred thirty thousand, two hundred thirty-nine".