117965 has 4 divisors (see below), whose sum is σ = 141564. Its totient is φ = 94368.

The previous prime is 117959. The next prime is 117973. The reversal of 117965 is 569711.

It is a happy number.

117965 is nontrivially palindromic in base 4.

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 23716 + 94249 = 154^2 + 307^2 .

It is a cyclic number.

It is not a de Polignac number, because 117965 - 2⁸ = 117709 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11792 + ... + 11801.

It is an arithmetic number, because the mean of its divisors is an integer number (35391).

2¹¹⁷⁹⁶⁵ is an apocalyptic number.

It is an amenable number.

117965 is a deficient number, since it is larger than the sum of its proper divisors (23599).

117965 is an equidigital number, since it uses as much as digits as its factorization.

117965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23598.

The product of its digits is 1890, while the sum is 29.

The square root of 117965 is about 343.4603324985. The cubic root of 117965 is about 49.0438313898.

The spelling of 117965 in words is "one hundred seventeen thousand, nine hundred sixty-five".