13687017 has 8 divisors (see below), whose sum is σ = 18283296. Its totient is φ = 9107712.

The previous prime is 13687013. The next prime is 13687031. The reversal of 13687017 is 71078631.

13687017 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13687017 - 2² = 13687013 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13687013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2223 + ... + 5684.

It is an arithmetic number, because the mean of its divisors is an integer number (2285412).

Almost surely, 2^13687017 is an apocalyptic number.

It is an amenable number.

13687017 is a deficient number, since it is larger than the sum of its proper divisors (4596279).

13687017 is an equidigital number, since it uses as much as digits as its factorization.

13687017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8487.

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 13687017 is about 3699.5968699306. The cubic root of 13687017 is about 239.2046414035.

It can be divided in two parts, 1368 and 7017, that added together give a triangular number (8385 = T₁₂₉).

The spelling of 13687017 in words is "thirteen million, six hundred eighty-seven thousand, seventeen".