609420 has 48 divisors (see below), whose sum is σ = 1951488. Its totient is φ = 139200.

The previous prime is 609407. The next prime is 609421. The reversal of 609420 is 24906.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609421) 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, 306 + ... + 1145.

It is an arithmetic number, because the mean of its divisors is an integer number (40656).

2⁶⁰⁹⁴²⁰ is an apocalyptic number.

609420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

609420 is an abundant number, since it is smaller than the sum of its proper divisors (1342068).

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

609420 is a wasteful number, since it uses less digits than its factorization.

609420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1470 (or 1468 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 609420 is about 780.6535723354. The cubic root of 609420 is about 84.7823729233.

The spelling of 609420 in words is "six hundred nine thousand, four hundred twenty".