13644746 has 4 divisors (see below), whose sum is σ = 20467122. Its totient is φ = 6822372.

The previous prime is 13644739. The next prime is 13644769. The reversal of 13644746 is 64744631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 13432225 + 212521 = 3665^2 + 461^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3411185 + ... + 3411188.

Almost surely, 2^13644746 is an apocalyptic number.

13644746 is a deficient number, since it is larger than the sum of its proper divisors (6822376).

13644746 is an equidigital number, since it uses as much as digits as its factorization.

13644746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6822375.

The product of its digits is 48384, while the sum is 35.

The square root of 13644746 is about 3693.8795324158. The cubic root of 13644746 is about 238.9581341559.

The spelling of 13644746 in words is "thirteen million, six hundred forty-four thousand, seven hundred forty-six".