1668208 has 20 divisors (see below), whose sum is σ = 3312288. Its totient is φ = 813440.

The previous prime is 1668197. The next prime is 1668211. The reversal of 1668208 is 8028661.

It is a self number, because there is not a number n which added to its sum of digits gives 1668208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 616 + ... + 1927.

2^1668208 is an apocalyptic number.

It is an amenable number.

1668208 is a deficient number, since it is larger than the sum of its proper divisors (1644080).

1668208 is a wasteful number, since it uses less digits than its factorization.

1668208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2592 (or 2586 counting only the distinct ones).

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

The square root of 1668208 is about 1291.5912666165. The cubic root of 1668208 is about 118.5996479434.

The spelling of 1668208 in words is "one million, six hundred sixty-eight thousand, two hundred eight".