11653 has 4 divisors (see below), whose sum is σ = 11968. Its totient is φ = 11340.

The previous prime is 11633. The next prime is 11657. The reversal of 11653 is 35611.

11653 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35611 = 149 ⋅239.

It is a cyclic number.

It is not a de Polignac number, because 11653 - 2⁵ = 11621 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 93 + ... + 178.

It is an arithmetic number, because the mean of its divisors is an integer number (2992).

2¹¹⁶⁵³ is an apocalyptic number.

It is an amenable number.

11653 is a deficient number, since it is larger than the sum of its proper divisors (315).

11653 is an equidigital number, since it uses as much as digits as its factorization.

11653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314.

The product of its digits is 90, while the sum is 16.

The square root of 11653 is about 107.9490620617. The cubic root of 11653 is about 22.6714474729.

It can be divided in two parts, 116 and 53, that added together give a square (169 = 13²).

The spelling of 11653 in words is "eleven thousand, six hundred fifty-three".