13642717 has 4 divisors (see below), whose sum is σ = 14882976. Its totient is φ = 12402460.

The previous prime is 13642693. The next prime is 13642723. The reversal of 13642717 is 71724631.

13642717 is digitally balanced in base 3, 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71724631 = 11 ⋅6520421.

It is a cyclic number.

It is not a de Polignac number, because 13642717 - 2¹⁹ = 13118429 is a prime.

It is a super-2 number, since 2×13642717² = 372247454284178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13642757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 620113 + ... + 620134.

It is an arithmetic number, because the mean of its divisors is an integer number (3720744).

Almost surely, 2^13642717 is an apocalyptic number.

It is an amenable number.

13642717 is a deficient number, since it is larger than the sum of its proper divisors (1240259).

13642717 is a wasteful number, since it uses less digits than its factorization.

13642717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1240258.

The product of its digits is 7056, while the sum is 31.

The square root of 13642717 is about 3693.6048787059. The cubic root of 13642717 is about 238.9462890572.

The spelling of 13642717 in words is "thirteen million, six hundred forty-two thousand, seven hundred seventeen".