650666536 has 16 divisors (see below), whose sum is σ = 1313846100. Its totient is φ = 300307584.

The previous prime is 650666509. The next prime is 650666537. The reversal of 650666536 is 635666056.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 649944036 + 722500 = 25494^2 + 850^2 .

It is a junction number, because it is equal to n+sod(n) for n = 650666492 and 650666501.

It is not an unprimeable number, because it can be changed into a prime (650666537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3128101 + ... + 3128308.

Almost surely, 2^650666536 is an apocalyptic number.

It is an amenable number.

650666536 is an abundant number, since it is smaller than the sum of its proper divisors (663179564).

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

650666536 is a wasteful number, since it uses less digits than its factorization.

650666536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6256428 (or 6256424 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 43.

The square root of 650666536 is about 25508.1660650075. The cubic root of 650666536 is about 866.5350962664.

The spelling of 650666536 in words is "six hundred fifty million, six hundred sixty-six thousand, five hundred thirty-six".