13224664 has 8 divisors (see below), whose sum is σ = 24796260. Its totient is φ = 6612328.

The previous prime is 13224647. The next prime is 13224671. The reversal of 13224664 is 46642231.

13224664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 826534 + ... + 826549.

Almost surely, 2^13224664 is an apocalyptic number.

It is an amenable number.

13224664 is a deficient number, since it is larger than the sum of its proper divisors (11571596).

13224664 is a wasteful number, since it uses less digits than its factorization.

13224664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1653089 (or 1653085 counting only the distinct ones).

The product of its digits is 6912, while the sum is 28.

The square root of 13224664 is about 3636.5731121483. The cubic root of 13224664 is about 236.4802534814.

Adding to 13224664 its reverse (46642231), we get a palindrome (59866895).

The spelling of 13224664 in words is "thirteen million, two hundred twenty-four thousand, six hundred sixty-four".