650663140 has 24 divisors (see below), whose sum is σ = 1413510840. Its totient is φ = 251290368.

The previous prime is 650663119. The next prime is 650663147. The reversal of 650663140 is 41366056.

It can be written as a sum of positive squares in 4 ways, for example, as 213685924 + 436977216 = 14618^2 + 20904^2 .

It is not an unprimeable number, because it can be changed into a prime (650663147) 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 7 ways as a sum of consecutive naturals, for example, 560337 + ... + 561496.

It is an arithmetic number, because the mean of its divisors is an integer number (58896285).

Almost surely, 2^650663140 is an apocalyptic number.

It is an amenable number.

650663140 is an abundant number, since it is smaller than the sum of its proper divisors (762847700).

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

650663140 is a wasteful number, since it uses less digits than its factorization.

650663140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121871 (or 1121869 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 650663140 is about 25508.0994980026. The cubic root of 650663140 is about 866.5335887055.

The spelling of 650663140 in words is "six hundred fifty million, six hundred sixty-three thousand, one hundred forty".