1788066 has 48 divisors (see below), whose sum is σ = 4627584. Its totient is φ = 487872.

The previous prime is 1788041. The next prime is 1788067. The reversal of 1788066 is 6608871.

It is a self number, because there is not a number n which added to its sum of digits gives 1788066.

It is not an unprimeable number, because it can be changed into a prime (1788067) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2590 + ... + 3206.

It is an arithmetic number, because the mean of its divisors is an integer number (96408).

2^1788066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1788066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2313792).

1788066 is an abundant number, since it is smaller than the sum of its proper divisors (2839518).

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

1788066 is a wasteful number, since it uses less digits than its factorization.

1788066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655 (or 652 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 1788066 is about 1337.1858509572. The cubic root of 1788066 is about 121.3746102635.

The spelling of 1788066 in words is "one million, seven hundred eighty-eight thousand, sixty-six".