1668344 has 16 divisors (see below), whose sum is σ = 3159000. Its totient is φ = 825952.

The previous prime is 1668323. The next prime is 1668347. The reversal of 1668344 is 4438661.

It is a self number, because there is not a number n which added to its sum of digits gives 1668344.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668347) 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, 119 + ... + 1830.

2^1668344 is an apocalyptic number.

It is an amenable number.

1668344 is a deficient number, since it is larger than the sum of its proper divisors (1490656).

1668344 is a wasteful number, since it uses less digits than its factorization.

1668344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2062 (or 2058 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 1668344 is about 1291.6439137781. The cubic root of 1668344 is about 118.6028707856.

The spelling of 1668344 in words is "one million, six hundred sixty-eight thousand, three hundred forty-four".