609216784 has 20 divisors (see below), whose sum is σ = 1287663120. Its totient is φ = 276916640.

The previous prime is 609216781. The next prime is 609216791. The reversal of 609216784 is 487612906.

It is a super-2 number, since 2×609216784² = 742290179814605312, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 609216784.

It is not an unprimeable number, because it can be changed into a prime (609216781) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1730554 + ... + 1730905.

It is an arithmetic number, because the mean of its divisors is an integer number (64383156).

Almost surely, 2^609216784 is an apocalyptic number.

It is an amenable number.

609216784 is an abundant number, since it is smaller than the sum of its proper divisors (678446336).

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

609216784 is a wasteful number, since it uses less digits than its factorization.

609216784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3461478 (or 3461472 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 609216784 is about 24682.3172331935. The cubic root of 609216784 is about 847.7294808764.

The spelling of 609216784 in words is "six hundred nine million, two hundred sixteen thousand, seven hundred eighty-four".