117655 has 4 divisors (see below), whose sum is σ = 141192. Its totient is φ = 94120.

The previous prime is 117643. The next prime is 117659. The reversal of 117655 is 556711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 556711 = 71 ⋅7841.

It is a de Polignac number, because none of the positive numbers 2^k-117655 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 (117659) 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, 11761 + ... + 11770.

It is an arithmetic number, because the mean of its divisors is an integer number (35298).

117655 is a Friedman number, since it can be written as 6+7*(5+1+1)^5, using all its digits and the basic arithmetic operations.

2¹¹⁷⁶⁵⁵ is an apocalyptic number.

117655 is a deficient number, since it is larger than the sum of its proper divisors (23537).

117655 is an equidigital number, since it uses as much as digits as its factorization.

117655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23536.

The product of its digits is 1050, while the sum is 25.

The square root of 117655 is about 343.0087462442. The cubic root of 117655 is about 49.0008329721. Note that the first 3 decimals are identical.

The spelling of 117655 in words is "one hundred seventeen thousand, six hundred fifty-five".