650509320 has 64 divisors (see below), whose sum is σ = 1966472640. Its totient is φ = 172140800.

The previous prime is 650509319. The next prime is 650509331. The reversal of 650509320 is 23905056.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4971 + ... + 36410.

It is an arithmetic number, because the mean of its divisors is an integer number (30726135).

Almost surely, 2^650509320 is an apocalyptic number.

650509320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 650509320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (983236320).

650509320 is an abundant number, since it is smaller than the sum of its proper divisors (1315963320).

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

650509320 is a wasteful number, since it uses less digits than its factorization.

650509320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41526 (or 41522 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 650509320 is about 25505.0841990376. The cubic root of 650509320 is about 866.4652990415.

The spelling of 650509320 in words is "six hundred fifty million, five hundred nine thousand, three hundred twenty".