13645741 has 4 divisors (see below), whose sum is σ = 13667292. Its totient is φ = 13624192.

The previous prime is 13645727. The next prime is 13645757. The reversal of 13645741 is 14754631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5546025 + 8099716 = 2355^2 + 2846^2 .

It is not a de Polignac number, because 13645741 - 2¹⁹ = 13121453 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 (13646741) 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, 9796 + ... + 11101.

It is an arithmetic number, because the mean of its divisors is an integer number (3416823).

Almost surely, 2^13645741 is an apocalyptic number.

It is an amenable number.

13645741 is a deficient number, since it is larger than the sum of its proper divisors (21551).

13645741 is an equidigital number, since it uses as much as digits as its factorization.

13645741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21550.

The product of its digits is 10080, while the sum is 31.

The square root of 13645741 is about 3694.0142122087. The cubic root of 13645741 is about 238.9639424371.

The spelling of 13645741 in words is "thirteen million, six hundred forty-five thousand, seven hundred forty-one".