13715617 has 4 divisors (see below), whose sum is σ = 14522436. Its totient is φ = 12908800.

The previous prime is 13715593. The next prime is 13715621. The reversal of 13715617 is 71651731.

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 12278016 + 1437601 = 3504^2 + 1199^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13715617 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13715627) 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, 403384 + ... + 403417.

It is an arithmetic number, because the mean of its divisors is an integer number (3630609).

Almost surely, 2^13715617 is an apocalyptic number.

13715617 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

13715617 is a deficient number, since it is larger than the sum of its proper divisors (806819).

13715617 is an equidigital number, since it uses as much as digits as its factorization.

13715617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806818.

The product of its digits is 4410, while the sum is 31.

The square root of 13715617 is about 3703.4601388431. The cubic root of 13715617 is about 239.3711372190.

The spelling of 13715617 in words is "thirteen million, seven hundred fifteen thousand, six hundred seventeen".