1668296 has 32 divisors (see below), whose sum is σ = 3694080. Its totient is φ = 691920.

The previous prime is 1668253. The next prime is 1668299. The reversal of 1668296 is 6928661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668299) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53801 + ... + 53831.

It is an arithmetic number, because the mean of its divisors is an integer number (115440).

2^1668296 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1668296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1847040).

1668296 is an abundant number, since it is smaller than the sum of its proper divisors (2025784).

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

1668296 is an frugal number, since it uses more digits than its factorization.

1668296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106 (or 40 counting only the distinct ones).

The product of its digits is 31104, while the sum is 38.

The square root of 1668296 is about 1291.6253326720. The cubic root of 1668296 is about 118.6017333319.

The spelling of 1668296 in words is "one million, six hundred sixty-eight thousand, two hundred ninety-six".