1155660 has 96 divisors (see below), whose sum is σ = 3773952. Its totient is φ = 261120.

The previous prime is 1155659. The next prime is 1155689. The reversal of 1155660 is 665511.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1155660.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11169 + ... + 11271.

It is an arithmetic number, because the mean of its divisors is an integer number (39312).

2^1155660 is an apocalyptic number.

1155660 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 1155660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1886976).

1155660 is an abundant number, since it is smaller than the sum of its proper divisors (2618292).

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

1155660 is a wasteful number, since it uses less digits than its factorization.

1155660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 1155660 is about 1075.0162789465. The cubic root of 1155660 is about 104.9405559222.

It can be divided in two parts, 115 and 5660, that added together give a palindrome (5775).

The spelling of 1155660 in words is "one million, one hundred fifty-five thousand, six hundred sixty".