555966 has 24 divisors (see below), whose sum is σ = 1225224. Its totient is φ = 182160.

The previous prime is 555953. The next prime is 555967. The reversal of 555966 is 669555.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 555966.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 555966.

It is not an unprimeable number, because it can be changed into a prime (555967) by changing a digit.

555966 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 (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 976 + ... + 1436.

It is an arithmetic number, because the mean of its divisors is an integer number (51051).

2⁵⁵⁵⁹⁶⁶ is an apocalyptic number.

555966 is an abundant number, since it is smaller than the sum of its proper divisors (669258).

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

555966 is a wasteful number, since it uses less digits than its factorization.

555966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536 (or 533 counting only the distinct ones).

The product of its digits is 40500, while the sum is 36.

The square root of 555966 is about 745.6312761681. The cubic root of 555966 is about 82.2273090217.

It can be divided in two parts, 5559 and 66, that added together give a square (5625 = 75²).

The spelling of 555966 in words is "five hundred fifty-five thousand, nine hundred sixty-six".