1668126 has 16 divisors (see below), whose sum is σ = 3418128. Its totient is φ = 542400.

The previous prime is 1668119. The next prime is 1668131. The reversal of 1668126 is 6218661.

1668126 is nontrivially palindromic in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 1668093 and 1668102.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3145 + ... + 3636.

It is an arithmetic number, because the mean of its divisors is an integer number (213633).

2^1668126 is an apocalyptic number.

1668126 is an abundant number, since it is smaller than the sum of its proper divisors (1750002).

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

1668126 is a wasteful number, since it uses less digits than its factorization.

1668126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6827.

The product of its digits is 3456, while the sum is 30.

The square root of 1668126 is about 1291.5595224379. The cubic root of 1668126 is about 118.5977046744.

The spelling of 1668126 in words is "one million, six hundred sixty-eight thousand, one hundred twenty-six".