650991072 has 192 divisors, whose sum is σ = 1925683200. Its totient is φ = 191600640.

The previous prime is 650991059. The next prime is 650991113. The reversal of 650991072 is 270199056.

650991072 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 650991072.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1639578 + ... + 1639974.

It is an arithmetic number, because the mean of its divisors is an integer number (10029600).

Almost surely, 2^650991072 is an apocalyptic number.

650991072 is a gapful number since it is divisible by the number (62) 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 650991072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (962841600).

650991072 is an abundant number, since it is smaller than the sum of its proper divisors (1274692128).

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

650991072 is a wasteful number, since it uses less digits than its factorization.

650991072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489 (or 481 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 39.

The square root of 650991072 is about 25514.5266857922. The cubic root of 650991072 is about 866.6791409118.

The spelling of 650991072 in words is "six hundred fifty million, nine hundred ninety-one thousand, seventy-two".