It is a congruent number.
Almost surely, 256623000 is an apocalyptic number.
56623000 is a gapful number since it is divisible by the number (50) 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 56623000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75722400).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
56623000 is a wasteful number, since it uses less digits than its factorization.
56623000 is an odious number, because the sum of its binary digits is odd.
The square root of 56623000 is about 7524.8255793739. The cubic root of 56623000 is about 383.9997649015. Note that the first 3 decimals are identical.
Adding to 56623000 its reverse (32665), we get a palindrome (56655665).
The spelling of 56623000 in words is "fifty-six million, six hundred twenty-three thousand".