650909720 has 16 divisors (see below), whose sum is σ = 1464546960. Its totient is φ = 260363872.

The previous prime is 650909717. The next prime is 650909723. The reversal of 650909720 is 27909056.

It is an interprime number because it is at equal distance from previous prime (650909717) and next prime (650909723).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650909723) 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, 8136332 + ... + 8136411.

It is an arithmetic number, because the mean of its divisors is an integer number (91534185).

Almost surely, 2^650909720 is an apocalyptic number.

It is an amenable number.

650909720 is an abundant number, since it is smaller than the sum of its proper divisors (813637240).

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

650909720 is a wasteful number, since it uses less digits than its factorization.

650909720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16272754 (or 16272750 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 650909720 is about 25512.9324069187. The cubic root of 650909720 is about 866.6430374886.

The spelling of 650909720 in words is "six hundred fifty million, nine hundred nine thousand, seven hundred twenty".