13115660 has 24 divisors (see below), whose sum is σ = 27878256. Its totient is φ = 5182400.

The previous prime is 13115657. The next prime is 13115677. The reversal of 13115660 is 6651131.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2291 + ... + 5610.

It is an arithmetic number, because the mean of its divisors is an integer number (1161594).

Almost surely, 2^13115660 is an apocalyptic number.

13115660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13115660 is an abundant number, since it is smaller than the sum of its proper divisors (14762596).

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

13115660 is a wasteful number, since it uses less digits than its factorization.

13115660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7993 (or 7991 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 13115660 is about 3621.5549146741. The cubic root of 13115660 is about 235.8287323898.

Adding to 13115660 its reverse (6651131), we get a palindrome (19766791).

The spelling of 13115660 in words is "thirteen million, one hundred fifteen thousand, six hundred sixty".