13660 has 12 divisors (see below), whose sum is σ = 28728. Its totient is φ = 5456.

The previous prime is 13649. The next prime is 13669. The reversal of 13660 is 6631.

It is a happy number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13669) 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, 322 + ... + 361.

It is an arithmetic number, because the mean of its divisors is an integer number (2394).

2¹³⁶⁶⁰ is an apocalyptic number.

13660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13660 is an abundant number, since it is smaller than the sum of its proper divisors (15068).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14364).

13660 is a wasteful number, since it uses less digits than its factorization.

13660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692 (or 690 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 13660 is about 116.8760026695. The cubic root of 13660 is about 23.9047147903.

It can be divided in two parts, 136 and 60, that added together give a square (196 = 14²).

The spelling of 13660 in words is "thirteen thousand, six hundred sixty".