806556 has 12 divisors (see below), whose sum is σ = 1881992. Its totient is φ = 268848.

The previous prime is 806549. The next prime is 806579. The reversal of 806556 is 655608.

806556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×806556² = 1301065162272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33595 + ... + 33618.

2⁸⁰⁶⁵⁵⁶ is an apocalyptic number.

It is an amenable number.

806556 is an abundant number, since it is smaller than the sum of its proper divisors (1075436).

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

806556 is a wasteful number, since it uses less digits than its factorization.

806556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67220 (or 67218 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 806556 is about 898.0846285290. The cubic root of 806556 is about 93.0846725679.

The spelling of 806556 in words is "eight hundred six thousand, five hundred fifty-six".