Adding to 123648 its reverse (846321), we get a palindrome (969969).
It is a happy number.
It is a nude number because it is divisible by every one of its digits.
It is a zygodrome in base 2.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 123648.
It is an unprimeable number.
123648 is a Friedman number, since it can be written as 483*16^2, using all its digits and the basic arithmetic operations.
2123648 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 123648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196224).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
123648 is an equidigital number, since it uses as much as digits as its factorization.
123648 is an evil number, because the sum of its binary digits is even.
The square root of 123648 is about 351.6361756134. The cubic root of 123648 is about 49.8190794782.
The spelling of 123648 in words is "one hundred twenty-three thousand, six hundred forty-eight".