650377728 has 640 divisors, whose sum is σ = 2639831040. Its totient is φ = 152616960.

The previous prime is 650377727. The next prime is 650377781. The reversal of 650377728 is 827773056.

650377728 is a `hidden beast` number, since 6 + 503 + 77 + 72 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (650377723) 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 63 ways as a sum of consecutive naturals, for example, 13837801 + ... + 13837847.

It is an arithmetic number, because the mean of its divisors is an integer number (4124736).

Almost surely, 2^650377728 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 650377728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1319915520).

650377728 is an abundant number, since it is smaller than the sum of its proper divisors (1989453312).

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

650377728 is a wasteful number, since it uses less digits than its factorization.

650377728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 45.

The square root of 650377728 is about 25502.5043476126. The cubic root of 650377728 is about 866.4068691378.

The spelling of 650377728 in words is "six hundred fifty million, three hundred seventy-seven thousand, seven hundred twenty-eight".