1798566 has 64 divisors (see below), whose sum is σ = 4769280. Its totient is φ = 437760.

The previous prime is 1798543. The next prime is 1798571. The reversal of 1798566 is 6658971.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7740 + ... + 7968.

It is an arithmetic number, because the mean of its divisors is an integer number (74520).

2^1798566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1798566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2384640).

1798566 is an abundant number, since it is smaller than the sum of its proper divisors (2970714).

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

1798566 is a wasteful number, since it uses less digits than its factorization.

1798566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269.

The product of its digits is 90720, while the sum is 42.

The square root of 1798566 is about 1341.1062597721. The cubic root of 1798566 is about 121.6117280788.

The spelling of 1798566 in words is "one million, seven hundred ninety-eight thousand, five hundred sixty-six".