1806366 has 16 divisors (see below), whose sum is σ = 3636864. Its totient is φ = 598104.

The previous prime is 1806361. The next prime is 1806373. The reversal of 1806366 is 6636081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1806361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55 + ... + 1901.

It is an arithmetic number, because the mean of its divisors is an integer number (227304).

2^1806366 is an apocalyptic number.

1806366 is an abundant number, since it is smaller than the sum of its proper divisors (1830498).

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

1806366 is a wasteful number, since it uses less digits than its factorization.

1806366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2015.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 1806366 is about 1344.0111606679. The cubic root of 1806366 is about 121.7872759916.

Subtracting from 1806366 its sum of digits (30), we obtain a square (1806336 = 1344²).

The spelling of 1806366 in words is "one million, eight hundred six thousand, three hundred sixty-six".