1122660 has 168 divisors, whose sum is σ = 4406976. Its totient is φ = 233280.

The previous prime is 1122659. The next prime is 1122679. The reversal of 1122660 is 662211.

It is a happy number.

1122660 is a `hidden beast` number, since 1 + 1 + 2 + 2 + 660 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 102055 + ... + 102065.

It is an arithmetic number, because the mean of its divisors is an integer number (26232).

2^1122660 is an apocalyptic number.

1122660 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 1122660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2203488).

1122660 is an abundant number, since it is smaller than the sum of its proper divisors (3284316).

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

1122660 is a wasteful number, since it uses less digits than its factorization.

1122660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45 (or 28 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1122660 is about 1059.5565109988. The cubic root of 1122660 is about 103.9320315262.

Adding to 1122660 its reverse (662211), we get a palindrome (1784871).

It can be divided in two parts, 112 and 2660, that added together give a palindrome (2772).

The spelling of 1122660 in words is "one million, one hundred twenty-two thousand, six hundred sixty".