13664229 has 4 divisors (see below), whose sum is σ = 18218976. Its totient is φ = 9109484.

The previous prime is 13664227. The next prime is 13664237. The reversal of 13664229 is 92246631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13664229 - 2¹ = 13664227 is a prime.

It is a super-2 number, since 2×13664229² = 373422308328882, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13664229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13664227) 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, 2277369 + ... + 2277374.

It is an arithmetic number, because the mean of its divisors is an integer number (4554744).

Almost surely, 2^13664229 is an apocalyptic number.

It is an amenable number.

13664229 is a deficient number, since it is larger than the sum of its proper divisors (4554747).

13664229 is an equidigital number, since it uses as much as digits as its factorization.

13664229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4554746.

The product of its digits is 15552, while the sum is 33.

The square root of 13664229 is about 3696.5157919316. The cubic root of 13664229 is about 239.0718142298.

The spelling of 13664229 in words is "thirteen million, six hundred sixty-four thousand, two hundred twenty-nine".