1836666 has 48 divisors (see below), whose sum is σ = 4402944. Its totient is φ = 549792.

The previous prime is 1836647. The next prime is 1836689. The reversal of 1836666 is 6666381.

It is a self number, because there is not a number n which added to its sum of digits gives 1836666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10915 + ... + 11081.

It is an arithmetic number, because the mean of its divisors is an integer number (91728).

2^1836666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1836666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2201472).

1836666 is an abundant number, since it is smaller than the sum of its proper divisors (2566278).

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

1836666 is a wasteful number, since it uses less digits than its factorization.

1836666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235 (or 232 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 1836666 is about 1355.2365107242. The cubic root of 1836666 is about 122.4644572714.

The spelling of 1836666 in words is "one million, eight hundred thirty-six thousand, six hundred sixty-six".