13864641 has 16 divisors (see below), whose sum is σ = 21527424. Its totient is φ = 7772544.

The previous prime is 13864621. The next prime is 13864649. The reversal of 13864641 is 14646831.

13864641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13864641 - 2¹⁴ = 13848257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13864649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5116 + ... + 7341.

It is an arithmetic number, because the mean of its divisors is an integer number (1345464).

Almost surely, 2^13864641 is an apocalyptic number.

It is an amenable number.

13864641 is a deficient number, since it is larger than the sum of its proper divisors (7662783).

13864641 is a wasteful number, since it uses less digits than its factorization.

13864641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12520.

The product of its digits is 13824, while the sum is 33.

The square root of 13864641 is about 3723.5253456906. The cubic root of 13864641 is about 240.2349608696.

The spelling of 13864641 in words is "thirteen million, eight hundred sixty-four thousand, six hundred forty-one".