1000668208 has 10 divisors (see below), whose sum is σ = 1938794684. Its totient is φ = 500334096.

The previous prime is 1000668203. The next prime is 1000668209. The reversal of 1000668208 is 8028660001.

It is a self number, because there is not a number n which added to its sum of digits gives 1000668208.

It is not an unprimeable number, because it can be changed into a prime (1000668203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31270866 + ... + 31270897.

Almost surely, 2^1000668208 is an apocalyptic number.

It is an amenable number.

1000668208 is a deficient number, since it is larger than the sum of its proper divisors (938126476).

1000668208 is an equidigital number, since it uses as much as digits as its factorization.

1000668208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62541771 (or 62541765 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 1000668208 is about 31633.3401334731. The cubic root of 1000668208 is about 1000.2226864071. Note that the first 3 decimals are identical.

The spelling of 1000668208 in words is "one billion, six hundred sixty-eight thousand, two hundred eight".