1668063 has 4 divisors (see below), whose sum is σ = 2224088. Its totient is φ = 1112040.

The previous prime is 1668061. The next prime is 1668083. The reversal of 1668063 is 3608661.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1668063 - 2¹ = 1668061 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1668063.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278008 + ... + 278013.

It is an arithmetic number, because the mean of its divisors is an integer number (556022).

2^1668063 is an apocalyptic number.

1668063 is a deficient number, since it is larger than the sum of its proper divisors (556025).

1668063 is an equidigital number, since it uses as much as digits as its factorization.

1668063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556024.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 1668063 is about 1291.5351330878. The cubic root of 1668063 is about 118.5962116318.

The spelling of 1668063 in words is "one million, six hundred sixty-eight thousand, sixty-three".