115658 has 4 divisors (see below), whose sum is σ = 173490. Its totient is φ = 57828.

The previous prime is 115657. The next prime is 115663. The reversal of 115658 is 856511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 856511 = 17 ⋅50383.

It can be written as a sum of positive squares in only one way, i.e., 97969 + 17689 = 313^2 + 133^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (115657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28913 + ... + 28916.

2¹¹⁵⁶⁵⁸ is an apocalyptic number.

115658 is a deficient number, since it is larger than the sum of its proper divisors (57832).

115658 is an equidigital number, since it uses as much as digits as its factorization.

115658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57831.

The product of its digits is 1200, while the sum is 26.

The square root of 115658 is about 340.0852834217. The cubic root of 115658 is about 48.7220133029.

The spelling of 115658 in words is "one hundred fifteen thousand, six hundred fifty-eight".