Adding to 66000000 its reverse (66), we get a palindrome (66000066).
Multipling 66000000 by its reverse (66), we get a square (4356000000 = 660002).
66000000 divided by its reverse (66) gives a 6-th power (1000000 = 106).
It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.
It is a nialpdrome in base 10.
It is a zygodrome in base 5 and base 10.
It is a self number, because there is not a number n which added to its sum of digits gives 66000000.
Almost surely, 266000000 is an apocalyptic number.
66000000 is a gapful number since it is divisible by the number (60) 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 66000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119529720).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
66000000 is an frugal number, since it uses more digits than its factorization.
66000000 is an evil number, because the sum of its binary digits is even.
The square root of 66000000 is about 8124.0384046360. The cubic root of 66000000 is about 404.1240020622.