13638603 has 16 divisors (see below), whose sum is σ = 20120832. Its totient is φ = 8148000.

The previous prime is 13638593. The next prime is 13638623. The reversal of 13638603 is 30683631.

13638603 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13638603 - 2⁸ = 13638347 is a prime.

It is a super-2 number, since 2×13638603² = 372022983583218, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13638623) 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, 568 + ... + 5253.

It is an arithmetic number, because the mean of its divisors is an integer number (1257552).

Almost surely, 2^13638603 is an apocalyptic number.

13638603 is a deficient number, since it is larger than the sum of its proper divisors (6482229).

13638603 is a wasteful number, since it uses less digits than its factorization.

13638603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5906.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 13638603 is about 3693.0479282024. The cubic root of 13638603 is about 238.9222683322.

It can be divided in two parts, 13638 and 603, that added together give a palindrome (14241).

The spelling of 13638603 in words is "thirteen million, six hundred thirty-eight thousand, six hundred three".