605540 has 48 divisors (see below), whose sum is σ = 1460592. Its totient is φ = 208896.

The previous prime is 605533. The next prime is 605543. The reversal of 605540 is 45506.

605540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 3364 + 602176 = 58^2 + 776^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (605543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4352 + ... + 4488.

It is an arithmetic number, because the mean of its divisors is an integer number (30429).

2⁶⁰⁵⁵⁴⁰ 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 605540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (730296).

605540 is an abundant number, since it is smaller than the sum of its proper divisors (855052).

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

605540 is a wasteful number, since it uses less digits than its factorization.

605540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 605540 is about 778.1645070292. The cubic root of 605540 is about 84.6020614751.

The spelling of 605540 in words is "six hundred five thousand, five hundred forty".