66289208 has 16 divisors (see below), whose sum is σ = 124388880. Its totient is φ = 33118848.

The previous prime is 66289193. The next prime is 66289213. The reversal of 66289208 is 80298266.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11885 + ... + 16547.

It is an arithmetic number, because the mean of its divisors is an integer number (7774305).

Almost surely, 2^66289208 is an apocalyptic number.

It is an amenable number.

66289208 is a deficient number, since it is larger than the sum of its proper divisors (58099672).

66289208 is a wasteful number, since it uses less digits than its factorization.

66289208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6446 (or 6442 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 66289208 is about 8141.8184700962. The cubic root of 66289208 is about 404.7134242562.

The spelling of 66289208 in words is "sixty-six million, two hundred eighty-nine thousand, two hundred eight".