1668822 has 16 divisors (see below), whose sum is σ = 3534192. Its totient is φ = 523520.

The previous prime is 1668803. The next prime is 1668833. The reversal of 1668822 is 2288661.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8079 + ... + 8282.

It is an arithmetic number, because the mean of its divisors is an integer number (220887).

2^1668822 is an apocalyptic number.

1668822 is an abundant number, since it is smaller than the sum of its proper divisors (1865370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1668822 is a wasteful number, since it uses less digits than its factorization.

1668822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16383.

The product of its digits is 9216, while the sum is 33.

The square root of 1668822 is about 1291.8289360438. The cubic root of 1668822 is about 118.6141967389.

The spelling of 1668822 in words is "one million, six hundred sixty-eight thousand, eight hundred twenty-two".