108653 has 4 divisors (see below), whose sum is σ = 109440. Its totient is φ = 107868.

The previous prime is 108649. The next prime is 108677. The reversal of 108653 is 356801.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 108653 - 2² = 108649 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108643) 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, 125 + ... + 482.

It is an arithmetic number, because the mean of its divisors is an integer number (27360).

2¹⁰⁸⁶⁵³ is an apocalyptic number.

It is an amenable number.

108653 is a deficient number, since it is larger than the sum of its proper divisors (787).

108653 is an equidigital number, since it uses as much as digits as its factorization.

108653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 108653 is about 329.6255451266. The cubic root of 108653 is about 47.7178177381.

The spelling of 108653 in words is "one hundred eight thousand, six hundred fifty-three".