1668983 has 2 divisors, whose sum is σ = 1668984. Its totient is φ = 1668982.

The previous prime is 1668971. The next prime is 1669027. The reversal of 1668983 is 3898661.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1668983 - 2⁸ = 1668727 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1668983.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1668913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 834491 + 834492.

It is an arithmetic number, because the mean of its divisors is an integer number (834492).

2^1668983 is an apocalyptic number.

1668983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1668983 is an equidigital number, since it uses as much as digits as its factorization.

1668983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 41.

The square root of 1668983 is about 1291.8912492931. The cubic root of 1668983 is about 118.6180110606.

The spelling of 1668983 in words is "one million, six hundred sixty-eight thousand, nine hundred eighty-three".