13606720 has 56 divisors (see below), whose sum is σ = 32799528. Its totient is φ = 5376000.

The previous prime is 13606699. The next prime is 13606727. The reversal of 13606720 is 2760631.

It can be written as a sum of positive squares in 4 ways, for example, as 876096 + 12730624 = 936^2 + 3568^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13606727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32110 + ... + 32530.

Almost surely, 2^13606720 is an apocalyptic number.

13606720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13606720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16399764).

13606720 is an abundant number, since it is smaller than the sum of its proper divisors (19192808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13606720 is a wasteful number, since it uses less digits than its factorization.

13606720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539 (or 529 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 13606720 is about 3688.7287783192. The cubic root of 13606720 is about 238.7359466523.

The spelling of 13606720 in words is "thirteen million, six hundred six thousand, seven hundred twenty".