65039 has 4 divisors (see below), whose sum is σ = 70056. Its totient is φ = 60024.

The previous prime is 65033. The next prime is 65053. The reversal of 65039 is 93056.

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

It is a cyclic number.

It is not a de Polignac number, because 65039 - 2⁸ = 64783 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2489 + ... + 2514.

It is an arithmetic number, because the mean of its divisors is an integer number (17514).

2⁶⁵⁰³⁹ is an apocalyptic number.

65039 is a deficient number, since it is larger than the sum of its proper divisors (5017).

65039 is a wasteful number, since it uses less digits than its factorization.

65039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5016.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 65039 is about 255.0274495030. The cubic root of 65039 is about 40.2152974297.

The spelling of 65039 in words is "sixty-five thousand, thirty-nine".