65104239 has 4 divisors (see below), whose sum is σ = 86805656. Its totient is φ = 43402824.

The previous prime is 65104229. The next prime is 65104321. The reversal of 65104239 is 93240156.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 65104239 - 2¹⁵ = 65071471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65104229) 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, 10850704 + ... + 10850709.

It is an arithmetic number, because the mean of its divisors is an integer number (21701414).

Almost surely, 2^65104239 is an apocalyptic number.

65104239 is a deficient number, since it is larger than the sum of its proper divisors (21701417).

65104239 is a wasteful number, since it uses less digits than its factorization.

65104239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21701416.

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

The square root of 65104239 is about 8068.7197869303. The cubic root of 65104239 is about 402.2873925714.

The spelling of 65104239 in words is "sixty-five million, one hundred four thousand, two hundred thirty-nine".