605550 has 48 divisors (see below), whose sum is σ = 1642752. Its totient is φ = 146400.

The previous prime is 605543. The next prime is 605551. The reversal of 605550 is 55506.

605550 is a nontrivial binomial coefficient, being equal to C(1101, 2).

It is a congruent number.

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

605550 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 23 ways as a sum of consecutive naturals, for example, 1467 + ... + 1833.

It is an arithmetic number, because the mean of its divisors is an integer number (34224).

2⁶⁰⁵⁵⁵⁰ is an apocalyptic number.

605550 is the 1100-th triangular number.

It is a practical number, because each smaller number is the sum of distinct divisors of 605550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (821376).

605550 is an abundant number, since it is smaller than the sum of its proper divisors (1037202).

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

605550 is a wasteful number, since it uses less digits than its factorization.

605550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 605550 is about 778.1709323793. The cubic root of 605550 is about 84.6025271839.

It can be divided in two parts, 6055 and 50, that added together give a triangular number (6105 = T₁₁₀).

The spelling of 605550 in words is "six hundred five thousand, five hundred fifty".