117658 has 8 divisors (see below), whose sum is σ = 178740. Its totient is φ = 58080.

The previous prime is 117643. The next prime is 117659. The reversal of 117658 is 856711.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 117649 + 9 = 343^2 + 3^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (117659) 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, 153 + ... + 508.

117658 is a Friedman number, since it can be written as 7^6+5+8/(1+1), using all its digits and the basic arithmetic operations.

2¹¹⁷⁶⁵⁸ is an apocalyptic number.

117658 is a deficient number, since it is larger than the sum of its proper divisors (61082).

117658 is an equidigital number, since it uses as much as digits as its factorization.

117658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752.

The product of its digits is 1680, while the sum is 28.

The square root of 117658 is about 343.0131192826. The cubic root of 117658 is about 49.0012494475.

The spelling of 117658 in words is "one hundred seventeen thousand, six hundred fifty-eight".