66286208 has 16 divisors (see below), whose sum is σ = 132054810. Its totient is φ = 33143040.

The previous prime is 66286169. The next prime is 66286223. The reversal of 66286208 is 80268266.

66286208 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 35904064 + 30382144 = 5992^2 + 5512^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×66286208² = 8787722742038528, which contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 258803 + ... + 259058.

Almost surely, 2^66286208 is an apocalyptic number.

It is an amenable number.

66286208 is a deficient number, since it is larger than the sum of its proper divisors (65768602).

66286208 is an equidigital number, since it uses as much as digits as its factorization.

66286208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517875 (or 517863 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 66286208 is about 8141.6342339852. The cubic root of 66286208 is about 404.7073188954.

The spelling of 66286208 in words is "sixty-six million, two hundred eighty-six thousand, two hundred eight".