13608641 has 4 divisors (see below), whose sum is σ = 13800384. Its totient is φ = 13416900.

The previous prime is 13608631. The next prime is 13608649. The reversal of 13608641 is 14680631.

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.

It is a cyclic number.

It is not a de Polignac number, because 13608641 - 2¹⁰ = 13607617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13608649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95765 + ... + 95906.

It is an arithmetic number, because the mean of its divisors is an integer number (3450096).

Almost surely, 2^13608641 is an apocalyptic number.

It is an amenable number.

13608641 is a deficient number, since it is larger than the sum of its proper divisors (191743).

13608641 is an equidigital number, since it uses as much as digits as its factorization.

13608641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191742.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 13608641 is about 3688.9891569372. The cubic root of 13608641 is about 238.7471810564.

It can be divided in two parts, 1360 and 8641, that added together give a palindrome (10001).

The spelling of 13608641 in words is "thirteen million, six hundred eight thousand, six hundred forty-one".