1188660 has 48 divisors (see below), whose sum is σ = 3632832. Its totient is φ = 288000.

The previous prime is 1188653. The next prime is 1188661. The reversal of 1188660 is 668811.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1188661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241 + ... + 1560.

It is an arithmetic number, because the mean of its divisors is an integer number (75684).

2^1188660 is an apocalyptic number.

1188660 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 1188660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1816416).

1188660 is an abundant number, since it is smaller than the sum of its proper divisors (2444172).

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

1188660 is a wasteful number, since it uses less digits than its factorization.

1188660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1824 (or 1822 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 1188660 is about 1090.2568504715. The cubic root of 1188660 is about 105.9300594752.

It can be divided in two parts, 118 and 8660, that added together give a palindrome (8778).

The spelling of 1188660 in words is "one million, one hundred eighty-eight thousand, six hundred sixty".