13660000 has 60 divisors (see below), whose sum is σ = 33654852. Its totient is φ = 5456000.

The previous prime is 13659991. The next prime is 13660001. The reversal of 13660000 is 6631.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a zygodrome in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13660001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 19659 + ... + 20341.

Almost surely, 2^13660000 is an apocalyptic number.

13660000 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 13660000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16827426).

13660000 is an abundant number, since it is smaller than the sum of its proper divisors (19994852).

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

13660000 is an frugal number, since it uses more digits than its factorization.

13660000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713 (or 690 counting only the distinct ones).

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

The square root of 13660000 is about 3695.9437225153. The cubic root of 13660000 is about 239.0471479027.

Adding to 13660000 its reverse (6631), we get a palindrome (13666631).

The spelling of 13660000 in words is "thirteen million, six hundred sixty thousand".