13648841 has 4 divisors (see below), whose sum is σ = 14451732. Its totient is φ = 12845952.

The previous prime is 13648823. The next prime is 13648849. The reversal of 13648841 is 14884631.

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 4857616 + 8791225 = 2204^2 + 2965^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13648841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13648849) 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, 401420 + ... + 401453.

It is an arithmetic number, because the mean of its divisors is an integer number (3612933).

Almost surely, 2^13648841 is an apocalyptic number.

It is an amenable number.

13648841 is a deficient number, since it is larger than the sum of its proper divisors (802891).

13648841 is an equidigital number, since it uses as much as digits as its factorization.

13648841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802890.

The product of its digits is 18432, while the sum is 35.

The square root of 13648841 is about 3694.4337861166. The cubic root of 13648841 is about 238.9820367795.

The spelling of 13648841 in words is "thirteen million, six hundred forty-eight thousand, eight hundred forty-one".