66809282 has 8 divisors (see below), whose sum is σ = 105488400. Its totient is φ = 31646484.

The previous prime is 66809279. The next prime is 66809291. The reversal of 66809282 is 28290866.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×66809282² = 8926960322711048, which contains 22 as substring.

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, 879032 + ... + 879107.

It is an arithmetic number, because the mean of its divisors is an integer number (13186050).

Almost surely, 2^66809282 is an apocalyptic number.

66809282 is a deficient number, since it is larger than the sum of its proper divisors (38679118).

66809282 is a wasteful number, since it uses less digits than its factorization.

66809282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1758160.

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

The square root of 66809282 is about 8173.6945134988. The cubic root of 66809282 is about 405.7690655267.

The spelling of 66809282 in words is "sixty-six million, eight hundred nine thousand, two hundred eighty-two".