845556 has 24 divisors (see below), whose sum is σ = 2037504. Its totient is φ = 272640.

The previous prime is 845531. The next prime is 845567. The reversal of 845556 is 655548.

It is a congruent number.

It is an unprimeable number.

845556 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 765 + ... + 1508.

It is an arithmetic number, because the mean of its divisors is an integer number (84896).

2⁸⁴⁵⁵⁵⁶ is an apocalyptic number.

It is an amenable number.

845556 is an abundant number, since it is smaller than the sum of its proper divisors (1191948).

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

845556 is a wasteful number, since it uses less digits than its factorization.

845556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2311 (or 2309 counting only the distinct ones).

The product of its digits is 24000, while the sum is 33.

The square root of 845556 is about 919.5411899420. The cubic root of 845556 is about 94.5614504718.

The spelling of 845556 in words is "eight hundred forty-five thousand, five hundred fifty-six".