605980 has 24 divisors (see below), whose sum is σ = 1305360. Its totient is φ = 236160.

The previous prime is 605977. The next prime is 605987. The reversal of 605980 is 89506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (605987) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 451 + ... + 1189.

It is an arithmetic number, because the mean of its divisors is an integer number (54390).

2⁶⁰⁵⁹⁸⁰ 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 605980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (652680).

605980 is an abundant number, since it is smaller than the sum of its proper divisors (699380).

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

605980 is a wasteful number, since it uses less digits than its factorization.

605980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789 (or 787 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 605980 is about 778.4471722603. The cubic root of 605980 is about 84.6225478149.

It can be divided in two parts, 605 and 980, that multiplied together give a square (592900 = 770²).

The spelling of 605980 in words is "six hundred five thousand, nine hundred eighty".