117745 has 4 divisors (see below), whose sum is σ = 141300. Its totient is φ = 94192.

The previous prime is 117731. The next prime is 117751. The reversal of 117745 is 547711.

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 12769 + 104976 = 113^2 + 324^2 .

It is a cyclic number.

It is not a de Polignac number, because 117745 - 2⁷ = 117617 is a prime.

It is an unprimeable number.

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, 11770 + ... + 11779.

It is an arithmetic number, because the mean of its divisors is an integer number (35325).

2¹¹⁷⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

117745 is a deficient number, since it is larger than the sum of its proper divisors (23555).

117745 is an equidigital number, since it uses as much as digits as its factorization.

117745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23554.

The product of its digits is 980, while the sum is 25.

The square root of 117745 is about 343.1399131550. The cubic root of 117745 is about 49.0133241566.

The spelling of 117745 in words is "one hundred seventeen thousand, seven hundred forty-five".