1668348 has 54 divisors (see below), whose sum is σ = 4647552. Its totient is φ = 504240.

The previous prime is 1668347. The next prime is 1668361. The reversal of 1668348 is 8438661.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4165 + ... + 4547.

2^1668348 is an apocalyptic number.

1668348 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1668348, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2323776).

1668348 is an abundant number, since it is smaller than the sum of its proper divisors (2979204).

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

1668348 is a wasteful number, since it uses less digits than its factorization.

1668348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415 (or 399 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 1668348 is about 1291.6454621915. The cubic root of 1668348 is about 118.6029655725.

It can be divided in two parts, 1668 and 348, that added together give a triangular number (2016 = T₆₃).

The spelling of 1668348 in words is "one million, six hundred sixty-eight thousand, three hundred forty-eight".