609308568 has 240 divisors, whose sum is σ = 1979439000. Its totient is φ = 174493440.

The previous prime is 609308537. The next prime is 609308573. The reversal of 609308568 is 865803906.

609308568 is a `hidden beast` number, since 609 + 30 + 8 + 5 + 6 + 8 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1489548 + ... + 1489956.

Almost surely, 2^609308568 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 609308568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (989719500).

609308568 is an abundant number, since it is smaller than the sum of its proper divisors (1370130432).

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

609308568 is a wasteful number, since it uses less digits than its factorization.

609308568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468 (or 444 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 609308568 is about 24684.1764699574. The cubic root of 609308568 is about 847.7720514345.

The spelling of 609308568 in words is "six hundred nine million, three hundred eight thousand, five hundred sixty-eight".