1158660 has 72 divisors (see below), whose sum is σ = 3623256. Its totient is φ = 299520.

The previous prime is 1158653. The next prime is 1158673. The reversal of 1158660 is 668511.

It can be written as a sum of positive squares in 4 ways, for example, as 5184 + 1153476 = 72^2 + 1074^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7302 + ... + 7458.

It is an arithmetic number, because the mean of its divisors is an integer number (50323).

2^1158660 is an apocalyptic number.

1158660 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 1158660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1811628).

1158660 is an abundant number, since it is smaller than the sum of its proper divisors (2464596).

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

1158660 is a wasteful number, since it uses less digits than its factorization.

1158660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 208 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1158660 is about 1076.4107022879. The cubic root of 1158660 is about 105.0312831957.

The spelling of 1158660 in words is "one million, one hundred fifty-eight thousand, six hundred sixty".