13661360 has 20 divisors (see below), whose sum is σ = 31762848. Its totient is φ = 5464512.

The previous prime is 13661357. The next prime is 13661369. The reversal of 13661360 is 6316631.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (13661369) 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, 85304 + ... + 85463.

Almost surely, 2^13661360 is an apocalyptic number.

13661360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13661360 is an abundant number, since it is smaller than the sum of its proper divisors (18101488).

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

13661360 is a wasteful number, since it uses less digits than its factorization.

13661360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170780 (or 170774 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 13661360 is about 3696.1277034215. The cubic root of 13661360 is about 239.0550808782.

Adding to 13661360 its reverse (6316631), we get a palindrome (19977991).

The spelling of 13661360 in words is "thirteen million, six hundred sixty-one thousand, three hundred sixty".