650320650 has 360 divisors, whose sum is σ = 2193659820. Its totient is φ = 142248960.

The previous prime is 650320633. The next prime is 650320661. The reversal of 650320650 is 56023056.

650320650 is a `hidden beast` number, since 6 + 5 + 0 + 3 + 2 + 0 + 650 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 68112009 + 582208641 = 8253^2 + 24129^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

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 179 ways as a sum of consecutive naturals, for example, 5754994 + ... + 5755106.

Almost surely, 2^650320650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 650320650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1096829910).

650320650 is an abundant number, since it is smaller than the sum of its proper divisors (1543339170).

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

650320650 is a wasteful number, since it uses less digits than its factorization.

650320650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 650320650 is about 25501.3852564915. The cubic root of 650320650 is about 866.3815227296.

The spelling of 650320650 in words is "six hundred fifty million, three hundred twenty thousand, six hundred fifty".