65117 has 4 divisors (see below), whose sum is σ = 70140. Its totient is φ = 60096.

The previous prime is 65111. The next prime is 65119. The reversal of 65117 is 71156.

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

It can be written as a sum of positive squares in 2 ways, for example, as 19321 + 45796 = 139^2 + 214^2 .

It is a cyclic number.

It is not a de Polignac number, because 65117 - 2⁴ = 65101 is a prime.

It is a Duffinian number.

65117 is a modest number, since divided by 117 gives 65 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65111) 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, 2492 + ... + 2517.

It is an arithmetic number, because the mean of its divisors is an integer number (17535).

2⁶⁵¹¹⁷ is an apocalyptic number.

It is an amenable number.

65117 is a deficient number, since it is larger than the sum of its proper divisors (5023).

65117 is a wasteful number, since it uses less digits than its factorization.

65117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5022.

The product of its digits is 210, while the sum is 20.

The square root of 65117 is about 255.1803283954. The cubic root of 65117 is about 40.2313674803.

The spelling of 65117 in words is "sixty-five thousand, one hundred seventeen".