13687603 has 4 divisors (see below), whose sum is σ = 13707360. Its totient is φ = 13667848.

The previous prime is 13687591. The next prime is 13687627. The reversal of 13687603 is 30678631.

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

It is a cyclic number.

It is not a de Polignac number, because 13687603 - 2⁵ = 13687571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13687693) 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, 8800 + ... + 10237.

It is an arithmetic number, because the mean of its divisors is an integer number (3426840).

Almost surely, 2^13687603 is an apocalyptic number.

13687603 is a deficient number, since it is larger than the sum of its proper divisors (19757).

13687603 is an equidigital number, since it uses as much as digits as its factorization.

13687603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19756.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 13687603 is about 3699.6760669010. The cubic root of 13687603 is about 239.2080551476.

The spelling of 13687603 in words is "thirteen million, six hundred eighty-seven thousand, six hundred three".