1668030 has 96 divisors (see below), whose sum is σ = 5059584. Its totient is φ = 344448.

The previous prime is 1668019. The next prime is 1668031. The reversal of 1668030 is 308661.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668031) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35467 + ... + 35513.

It is an arithmetic number, because the mean of its divisors is an integer number (52704).

2^1668030 is an apocalyptic number.

1668030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1668030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2529792).

1668030 is an abundant number, since it is smaller than the sum of its proper divisors (3391554).

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

1668030 is a wasteful number, since it uses less digits than its factorization.

1668030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1668030 is about 1291.5223575301. The cubic root of 1668030 is about 118.5954295469.

The spelling of 1668030 in words is "one million, six hundred sixty-eight thousand, thirty".