13606646 has 4 divisors (see below), whose sum is σ = 20409972. Its totient is φ = 6803322.

The previous prime is 13606643. The next prime is 13606651. The reversal of 13606646 is 64660631.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13606643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3401660 + ... + 3401663.

It is an arithmetic number, because the mean of its divisors is an integer number (5102493).

Almost surely, 2^13606646 is an apocalyptic number.

13606646 is a deficient number, since it is larger than the sum of its proper divisors (6803326).

13606646 is an equidigital number, since it uses as much as digits as its factorization.

13606646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6803325.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 13606646 is about 3688.7187477497. The cubic root of 13606646 is about 238.7355138639.

The spelling of 13606646 in words is "thirteen million, six hundred six thousand, six hundred forty-six".