13643223 has 16 divisors (see below), whose sum is σ = 19913472. Its totient is φ = 8240000.

The previous prime is 13643213. The next prime is 13643239. The reversal of 13643223 is 32234631.

It is a cyclic number.

It is not a de Polignac number, because 13643223 - 2⁵ = 13643191 is a prime.

It is a super-2 number, since 2×13643223² = 372275067655458, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13643193 and 13643202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13643213) 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 15 ways as a sum of consecutive naturals, for example, 12718 + ... + 13748.

It is an arithmetic number, because the mean of its divisors is an integer number (1244592).

Almost surely, 2^13643223 is an apocalyptic number.

13643223 is a deficient number, since it is larger than the sum of its proper divisors (6270249).

13643223 is a wasteful number, since it uses less digits than its factorization.

13643223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446.

The product of its digits is 2592, while the sum is 24.

The square root of 13643223 is about 3693.6733748397. The cubic root of 13643223 is about 238.9492431444.

Adding to 13643223 its reverse (32234631), we get a palindrome (45877854).

The spelling of 13643223 in words is "thirteen million, six hundred forty-three thousand, two hundred twenty-three".