66066066 is nontrivially palindromic in base 10.
It is a self number, because there is not a number n which added to its sum of digits gives 66066066.
It is an unprimeable number.
Almost surely, 266066066 is an apocalyptic number.
66066066 is a gapful number since it is divisible by the number (66) formed by its first and last digit.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
66066066 is a wasteful number, since it uses less digits than its factorization.
66066066 is an evil number, because the sum of its binary digits is even.
The square root of 66066066 is about 8128.1034688296. The cubic root of 66066066 is about 404.2587998034.
The spelling of 66066066 in words is "sixty-six million, sixty-six thousand, sixty-six", and thus it is an eban number.