609020 has 24 divisors (see below), whose sum is σ = 1315104. Its totient is φ = 236736.

The previous prime is 608999. The next prime is 609043. The reversal of 609020 is 20906.

It is a self number, because there is not a number n which added to its sum of digits gives 609020.

It is a congruent number.

It is an unprimeable number.

609020 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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329 + ... + 1151.

It is an arithmetic number, because the mean of its divisors is an integer number (54796).

2⁶⁰⁹⁰²⁰ 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 609020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (657552).

609020 is an abundant number, since it is smaller than the sum of its proper divisors (706084).

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

609020 is a wasteful number, since it uses less digits than its factorization.

609020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869 (or 867 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 609020 is about 780.3973346956. The cubic root of 609020 is about 84.7638195602.

Adding to 609020 its reverse (20906), we get a palindrome (629926).

The spelling of 609020 in words is "six hundred nine thousand, twenty".