1068647666 has 32 divisors (see below), whose sum is σ = 1768919040. Its totient is φ = 481933584.

The previous prime is 1068647633. The next prime is 1068647669. The reversal of 1068647666 is 6667468601.

It is a happy number.

It is a super-3 number, since 3×1068647666³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (1068647669) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 192161 + ... + 197643.

It is an arithmetic number, because the mean of its divisors is an integer number (55278720).

Almost surely, 2^1068647666 is an apocalyptic number.

1068647666 is a deficient number, since it is larger than the sum of its proper divisors (700271374).

1068647666 is a wasteful number, since it uses less digits than its factorization.

1068647666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5750.

The product of its (nonzero) digits is 1741824, while the sum is 50.

The square root of 1068647666 is about 32690.1769037734. The cubic root of 1068647666 is about 1022.3780430541.

The spelling of 1068647666 in words is "one billion, sixty-eight million, six hundred forty-seven thousand, six hundred sixty-six".