13608653 has 4 divisors (see below), whose sum is σ = 14409180. Its totient is φ = 12808128.

The previous prime is 13608649. The next prime is 13608667. The reversal of 13608653 is 35680631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35680631 = 7 ⋅5097233.

It can be written as a sum of positive squares in 2 ways, for example, as 9872164 + 3736489 = 3142^2 + 1933^2 .

It is a cyclic number.

It is not a de Polignac number, because 13608653 - 2² = 13608649 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13608853) 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, 400238 + ... + 400271.

It is an arithmetic number, because the mean of its divisors is an integer number (3602295).

Almost surely, 2^13608653 is an apocalyptic number.

It is an amenable number.

13608653 is a deficient number, since it is larger than the sum of its proper divisors (800527).

13608653 is an equidigital number, since it uses as much as digits as its factorization.

13608653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800526.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 13608653 is about 3688.9907833986. The cubic root of 13608653 is about 238.7472512316.

The spelling of 13608653 in words is "thirteen million, six hundred eight thousand, six hundred fifty-three".