13606521 has 8 divisors (see below), whose sum is σ = 18449760. Its totient is φ = 8917152.

The previous prime is 13606519. The next prime is 13606529. The reversal of 13606521 is 12560631.

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

It is not a de Polignac number, because 13606521 - 2¹ = 13606519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13606491 and 13606500.

It is not an unprimeable number, because it can be changed into a prime (13606529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38260 + ... + 38613.

It is an arithmetic number, because the mean of its divisors is an integer number (2306220).

Almost surely, 2^13606521 is an apocalyptic number.

It is an amenable number.

13606521 is a deficient number, since it is larger than the sum of its proper divisors (4843239).

13606521 is an equidigital number, since it uses as much as digits as its factorization.

13606521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76935.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 13606521 is about 3688.7018041582. The cubic root of 13606521 is about 238.7347827988.

The spelling of 13606521 in words is "thirteen million, six hundred six thousand, five hundred twenty-one".