13644002 has 8 divisors (see below), whose sum is σ = 20852316. Its totient is φ = 6693232.

The previous prime is 13643977. The next prime is 13644017. The reversal of 13644002 is 20044631.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13402921 + 241081 = 3661^2 + 491^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64253 + ... + 64464.

Almost surely, 2^13644002 is an apocalyptic number.

13644002 is a deficient number, since it is larger than the sum of its proper divisors (7208314).

13644002 is a wasteful number, since it uses less digits than its factorization.

13644002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128772.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 13644002 is about 3693.7788239146. The cubic root of 13644002 is about 238.9537908948.

Adding to 13644002 its reverse (20044631), we get a palindrome (33688633).

The spelling of 13644002 in words is "thirteen million, six hundred forty-four thousand, two".