650789620 has 24 divisors (see below), whose sum is σ = 1471786344. Its totient is φ = 240291456.

The previous prime is 650789599. The next prime is 650789639. The reversal of 650789620 is 26987056.

It can be written as a sum of positive squares in 4 ways, for example, as 24088464 + 626701156 = 4908^2 + 25034^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1251259 + ... + 1251778.

It is an arithmetic number, because the mean of its divisors is an integer number (61324431).

Almost surely, 2^650789620 is an apocalyptic number.

It is an amenable number.

650789620 is an abundant number, since it is smaller than the sum of its proper divisors (820996724).

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

650789620 is a wasteful number, since it uses less digits than its factorization.

650789620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2503059 (or 2503057 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 650789620 is about 25510.5785900673. The cubic root of 650789620 is about 866.5897324870.

The spelling of 650789620 in words is "six hundred fifty million, seven hundred eighty-nine thousand, six hundred twenty".