13987603 has 16 divisors (see below), whose sum is σ = 16746496. Its totient is φ = 11430720.

The previous prime is 13987579. The next prime is 13987613. The reversal of 13987603 is 30678931.

It is not a de Polignac number, because 13987603 - 2¹³ = 13979411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13987613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15400 + ... + 16282.

It is an arithmetic number, because the mean of its divisors is an integer number (1046656).

Almost surely, 2^13987603 is an apocalyptic number.

13987603 is a deficient number, since it is larger than the sum of its proper divisors (2758893).

13987603 is an equidigital number, since it uses as much as digits as its factorization.

13987603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 13987603 is about 3740.0004010695. Note that the first 3 decimals coincide. The cubic root of 13987603 is about 240.9430660434.

The spelling of 13987603 in words is "thirteen million, nine hundred eighty-seven thousand, six hundred three".