1806856 has 16 divisors (see below), whose sum is σ = 3439440. Its totient is φ = 889680.

The previous prime is 1806841. The next prime is 1806859. The reversal of 1806856 is 6586081.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1806859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1150 + ... + 2221.

It is an arithmetic number, because the mean of its divisors is an integer number (214965).

2^1806856 is an apocalyptic number.

It is an amenable number.

1806856 is a deficient number, since it is larger than the sum of its proper divisors (1632584).

1806856 is a wasteful number, since it uses less digits than its factorization.

1806856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3444 (or 3440 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 1806856 is about 1344.1934384604. The cubic root of 1806856 is about 121.7982871174.

It can be divided in two parts, 1806 and 856, that added together give a palindrome (2662).

The spelling of 1806856 in words is "one million, eight hundred six thousand, eight hundred fifty-six".