13647313 has 4 divisors (see below), whose sum is σ = 14117940. Its totient is φ = 13176688.

The previous prime is 13647307. The next prime is 13647317. The reversal of 13647313 is 31374631.

It is a happy number.

13647313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11751184 + 1896129 = 3428^2 + 1377^2 .

It is a 7-Lehmer number, since φ(13647313) divides (13647313-1)⁷.

It is a cyclic number.

It is not a de Polignac number, because 13647313 - 2⁵ = 13647281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13647317) 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, 235270 + ... + 235327.

It is an arithmetic number, because the mean of its divisors is an integer number (3529485).

Almost surely, 2^13647313 is an apocalyptic number.

It is an amenable number.

13647313 is a deficient number, since it is larger than the sum of its proper divisors (470627).

13647313 is an equidigital number, since it uses as much as digits as its factorization.

13647313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470626.

The product of its digits is 4536, while the sum is 28.

The square root of 13647313 is about 3694.2269827394. The cubic root of 13647313 is about 238.9731183622.

The spelling of 13647313 in words is "thirteen million, six hundred forty-seven thousand, three hundred thirteen".