605231220 has 192 divisors, whose sum is σ = 1916006400. Its totient is φ = 141488640.

The previous prime is 605231201. The next prime is 605231227. The reversal of 605231220 is 22132506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (605231227) 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 63 ways as a sum of consecutive naturals, for example, 3381091 + ... + 3381269.

It is an arithmetic number, because the mean of its divisors is an integer number (9979200).

Almost surely, 2^605231220 is an apocalyptic number.

605231220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 605231220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (958003200).

605231220 is an abundant number, since it is smaller than the sum of its proper divisors (1310775180).

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

605231220 is a wasteful number, since it uses less digits than its factorization.

605231220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358 (or 356 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 605231220 is about 24601.4475183880. The cubic root of 605231220 is about 845.8767879401.

Adding to 605231220 its reverse (22132506), we get a palindrome (627363726).

The spelling of 605231220 in words is "six hundred five million, two hundred thirty-one thousand, two hundred twenty".