13601638 has 8 divisors (see below), whose sum is σ = 21106080. Its totient is φ = 6566280.

The previous prime is 13601633. The next prime is 13601647. The reversal of 13601638 is 83610631.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13601633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117198 + ... + 117313.

It is an arithmetic number, because the mean of its divisors is an integer number (2638260).

Almost surely, 2^13601638 is an apocalyptic number.

13601638 is a deficient number, since it is larger than the sum of its proper divisors (7504442).

13601638 is a wasteful number, since it uses less digits than its factorization.

13601638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234542.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 13601638 is about 3688.0398587868. The cubic root of 13601638 is about 238.7062209687.

The spelling of 13601638 in words is "thirteen million, six hundred one thousand, six hundred thirty-eight".