609912 has 48 divisors (see below), whose sum is σ = 1698840. Its totient is φ = 197568.

The previous prime is 609911. The next prime is 609913. The reversal of 609912 is 219906.

It is a happy number.

609912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (609911) and next prime (609913).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2998 + ... + 3194.

2⁶⁰⁹⁹¹² 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 609912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (849420).

609912 is an abundant number, since it is smaller than the sum of its proper divisors (1088928).

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

609912 is a wasteful number, since it uses less digits than its factorization.

609912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 609912 is about 780.9686293316. The cubic root of 609912 is about 84.8051824292.

It can be divided in two parts, 609 and 912, that added together give a square (1521 = 39²).

The spelling of 609912 in words is "six hundred nine thousand, nine hundred twelve".