1111660 has 48 divisors (see below), whose sum is σ = 2644992. Its totient is φ = 388800.

The previous prime is 1111651. The next prime is 1111661. The reversal of 1111660 is 661111.

It is not an unprimeable number, because it can be changed into a prime (1111661) 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 15 ways as a sum of consecutive naturals, for example, 6739 + ... + 6901.

It is an arithmetic number, because the mean of its divisors is an integer number (55104).

2^1111660 is an apocalyptic number.

1111660 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 1111660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1322496).

1111660 is an abundant number, since it is smaller than the sum of its proper divisors (1533332).

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

1111660 is a wasteful number, since it uses less digits than its factorization.

1111660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 1111660 is about 1054.3528821035. The cubic root of 1111660 is about 103.5914693114.

Adding to 1111660 its reverse (661111), we get a palindrome (1772771).

It can be divided in two parts, 1111 and 660, that added together give a palindrome (1771).

The spelling of 1111660 in words is "one million, one hundred eleven thousand, six hundred sixty".