14643681 has 24 divisors (see below), whose sum is σ = 22399200. Its totient is φ = 8476416.

The previous prime is 14643659. The next prime is 14643697. The reversal of 14643681 is 18634641.

It is not a de Polignac number, because 14643681 - 2¹⁰ = 14642657 is a prime.

It is a super-2 number, since 2×14643681² = 428874786459522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (14643641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7770 + ... + 9468.

It is an arithmetic number, because the mean of its divisors is an integer number (933300).

Almost surely, 2^14643681 is an apocalyptic number.

It is an amenable number.

14643681 is a deficient number, since it is larger than the sum of its proper divisors (7755519).

14643681 is a wasteful number, since it uses less digits than its factorization.

14643681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1745 (or 1732 counting only the distinct ones).

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

The square root of 14643681 is about 3826.7062860899. The cubic root of 14643681 is about 244.6527414095.

The spelling of 14643681 in words is "fourteen million, six hundred forty-three thousand, six hundred eighty-one".