| Base | Representation |
|---|---|
| bin | 111101010010… |
| … | …100001101101 |
| 3 | 1010020021022211 |
| 4 | 331102201231 |
| 5 | 13103113134 |
| 6 | 1332210421 |
| 7 | 253364413 |
| oct | 75224155 |
| 9 | 33207284 |
| 10 | 16066669 |
| 11 | 9084143 |
| 12 | 5469a11 |
| 13 | 3437008 |
| 14 | 21c32b3 |
| 15 | 1625764 |
| hex | f5286d |
16066669 has 4 divisors (see below), whose sum is σ = 16074720. Its totient is φ = 16058620.
The previous prime is 16066657. The next prime is 16066681. The reversal of 16066669 is 96666061.
It is a happy number.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.
It is an interprime number because it is at equal distance from previous prime (16066657) and next prime (16066681).
It is a cyclic number.
It is not a de Polignac number, because 16066669 - 27 = 16066541 is a prime.
It is a super-2 number, since 2×160666692 = 516275705511122, which contains 22 as substring.
It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (16066619) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1464 + ... + 5854.
It is an arithmetic number, because the mean of its divisors is an integer number (4018680).
Almost surely, 216066669 is an apocalyptic number.
It is an amenable number.
16066669 is a deficient number, since it is larger than the sum of its proper divisors (8051).
16066669 is an equidigital number, since it uses as much as digits as its factorization.
16066669 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 8050.
The product of its (nonzero) digits is 69984, while the sum is 40.
The square root of 16066669 is about 4008.3249618762. The cubic root of 16066669 is about 252.3337153051. Note that the first 3 decimals are identical.
The spelling of 16066669 in words is "sixteen million, sixty-six thousand, six hundred sixty-nine".
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