11111660 has 48 divisors (see below), whose sum is σ = 26906880. Its totient is φ = 3775680.

The previous prime is 11111651. The next prime is 11111677. The reversal of 11111660 is 6611111.

11111660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19175 + ... + 19745.

It is an arithmetic number, because the mean of its divisors is an integer number (560560).

Almost surely, 2^11111660 is an apocalyptic number.

11111660 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 11111660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13453440).

11111660 is an abundant number, since it is smaller than the sum of its proper divisors (15795220).

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

11111660 is a wasteful number, since it uses less digits than its factorization.

11111660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726 (or 724 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 17.

The square root of 11111660 is about 3333.4156656499. The cubic root of 11111660 is about 223.1479910766.

Adding to 11111660 its reverse (6611111), we get a palindrome (17722771).

The spelling of 11111660 in words is "eleven million, one hundred eleven thousand, six hundred sixty".