1123668 has 90 divisors (see below), whose sum is σ = 3568474. Its totient is φ = 296352.

The previous prime is 1123667. The next prime is 1123669. The reversal of 1123668 is 8663211.

It is an interprime number because it is at equal distance from previous prime (1123667) and next prime (1123669).

It can be written as a sum of positive squares in only one way, i.e., 777924 + 345744 = 882^2 + 588^2 .

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123667) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 86430 + ... + 86442.

2^1123668 is an apocalyptic number.

1123668 is a gapful number since it is divisible by the number (18) 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 1123668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1784237).

1123668 is an abundant number, since it is smaller than the sum of its proper divisors (2444806).

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

1123668 is a wasteful number, since it uses less digits than its factorization.

1123668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51 (or 25 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 1123668 is about 1060.0320749864. The cubic root of 1123668 is about 103.9631279546.

Adding to 1123668 its reverse (8663211), we get a palindrome (9786879).

The spelling of 1123668 in words is "one million, one hundred twenty-three thousand, six hundred sixty-eight".