It is a Curzon number.
It is a congruent number.
It is an unprimeable number.
Almost surely, 212648558 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 12648558, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14063616).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12648558 is a wasteful number, since it uses less digits than its factorization.
12648558 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5280.
The square root of 12648558 is about 3556.4811260570. The cubic root of 12648558 is about 232.9952168580.
The spelling of 12648558 in words is "twelve million, six hundred forty-eight thousand, five hundred fifty-eight".