609644412 has 288 divisors, whose sum is σ = 1917115200. Its totient is φ = 161243136.

The previous prime is 609644401. The next prime is 609644437. The reversal of 609644412 is 214446906.

609644412 is a `hidden beast` number, since 6 + 0 + 9 + 644 + 4 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5593014 + ... + 5593122.

It is an arithmetic number, because the mean of its divisors is an integer number (6656650).

Almost surely, 2^609644412 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 609644412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (958557600).

609644412 is an abundant number, since it is smaller than the sum of its proper divisors (1307470788).

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

609644412 is a wasteful number, since it uses less digits than its factorization.

609644412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205 (or 200 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 609644412 is about 24690.9783524266. The cubic root of 609644412 is about 847.9277836182.

The spelling of 609644412 in words is "six hundred nine million, six hundred forty-four thousand, four hundred twelve".