1668808 has 16 divisors (see below), whose sum is σ = 3294000. Its totient is φ = 790416.

The previous prime is 1668803. The next prime is 1668833. The reversal of 1668808 is 8088661.

It is not an unprimeable number, because it can be changed into a prime (1668803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5338 + ... + 5641.

It is an arithmetic number, because the mean of its divisors is an integer number (205875).

2^1668808 is an apocalyptic number.

It is an amenable number.

1668808 is a deficient number, since it is larger than the sum of its proper divisors (1625192).

1668808 is a wasteful number, since it uses less digits than its factorization.

1668808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11004 (or 11000 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 1668808 is about 1291.8235173583. The cubic root of 1668808 is about 118.6138650472.

The spelling of 1668808 in words is "one million, six hundred sixty-eight thousand, eight hundred eight".