1845566 has 16 divisors (see below), whose sum is σ = 2947104. Its totient is φ = 864864.

The previous prime is 1845563. The next prime is 1845577. The reversal of 1845566 is 6655481.

It is a happy number.

It is a super-2 number, since 2×1845566² = 6812227720712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1845563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2060 + ... + 2816.

It is an arithmetic number, because the mean of its divisors is an integer number (184194).

2^1845566 is an apocalyptic number.

1845566 is a deficient number, since it is larger than the sum of its proper divisors (1101538).

1845566 is a wasteful number, since it uses less digits than its factorization.

1845566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835.

The product of its digits is 28800, while the sum is 35.

The square root of 1845566 is about 1358.5161022233. The cubic root of 1845566 is about 122.6619487920.

It can be divided in two parts, 184 and 5566, that multiplied together give a square (1024144 = 1012²).

The spelling of 1845566 in words is "one million, eight hundred forty-five thousand, five hundred sixty-six".