605556 has 72 divisors (see below), whose sum is σ = 1834560. Its totient is φ = 171072.

The previous prime is 605551. The next prime is 605573. The reversal of 605556 is 655506.

605556 is a `hidden beast` number, since 605 + 5 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (605551) by changing a digit.

605556 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 23 ways as a sum of consecutive naturals, for example, 6760 + ... + 6848.

It is an arithmetic number, because the mean of its divisors is an integer number (25480).

2⁶⁰⁵⁵⁵⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 605556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (917280).

605556 is an abundant number, since it is smaller than the sum of its proper divisors (1229004).

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

605556 is a wasteful number, since it uses less digits than its factorization.

605556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 605556 is about 778.1747875638. The cubic root of 605556 is about 84.6028066068.

The spelling of 605556 in words is "six hundred five thousand, five hundred fifty-six".