11658 has 16 divisors (see below), whose sum is σ = 24480. Its totient is φ = 3696.

The previous prime is 11657. The next prime is 11677. The reversal of 11658 is 85611.

11658 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (11657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141 + ... + 207.

It is an arithmetic number, because the mean of its divisors is an integer number (1530).

2¹¹⁶⁵⁸ is an apocalyptic number.

11658 is an abundant number, since it is smaller than the sum of its proper divisors (12822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12240).

11658 is a wasteful number, since it uses less digits than its factorization.

11658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101.

The product of its digits is 240, while the sum is 21.

The square root of 11658 is about 107.9722186491. The cubic root of 11658 is about 22.6746895859.

The spelling of 11658 in words is "eleven thousand, six hundred fifty-eight".