1668884 has 24 divisors (see below), whose sum is σ = 3514560. Its totient is φ = 677376.

The previous prime is 1668883. The next prime is 1668889. The reversal of 1668884 is 4888661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668883) by changing a digit.

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, 1037 + ... + 2100.

It is an arithmetic number, because the mean of its divisors is an integer number (146440).

2^1668884 is an apocalyptic number.

1668884 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1668884 is an abundant number, since it is smaller than the sum of its proper divisors (1845676).

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

1668884 is a wasteful number, since it uses less digits than its factorization.

1668884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3167 (or 3165 counting only the distinct ones).

The product of its digits is 73728, while the sum is 41.

The square root of 1668884 is about 1291.8529328062. The cubic root of 1668884 is about 118.6156656372.

It can be divided in two parts, 1668 and 884, that added together give a palindrome (2552).

The spelling of 1668884 in words is "one million, six hundred sixty-eight thousand, eight hundred eighty-four".