13608538 has 8 divisors (see below), whose sum is σ = 20615220. Its totient is φ = 6736800.

The previous prime is 13608533. The next prime is 13608583. The reversal of 13608538 is 83580631.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13520329 + 88209 = 3677^2 + 297^2 .

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

It is not an unprimeable number, because it can be changed into a prime (13608533) 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, 33483 + ... + 33886.

Almost surely, 2^13608538 is an apocalyptic number.

13608538 is a deficient number, since it is larger than the sum of its proper divisors (7006682).

13608538 is a wasteful number, since it uses less digits than its factorization.

13608538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67472.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 13608538 is about 3688.9751964468. The cubic root of 13608538 is about 238.7465787180.

The spelling of 13608538 in words is "thirteen million, six hundred eight thousand, five hundred thirty-eight".