650983968 has 72 divisors (see below), whose sum is σ = 1854808956. Its totient is φ = 216576000.

The previous prime is 650983961. The next prime is 650983979. The reversal of 650983968 is 869389056.

It can be written as a sum of positive squares in 2 ways, for example, as 634435344 + 16548624 = 25188^2 + 4068^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (650983961) 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 11 ways as a sum of consecutive naturals, for example, 171208 + ... + 174968.

Almost surely, 2^650983968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 650983968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (927404478).

650983968 is an abundant number, since it is smaller than the sum of its proper divisors (1203824988).

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

650983968 is a wasteful number, since it uses less digits than its factorization.

650983968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4378 (or 4367 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The square root of 650983968 is about 25514.3874706018. The cubic root of 650983968 is about 866.6759883284.

The spelling of 650983968 in words is "six hundred fifty million, nine hundred eighty-three thousand, nine hundred sixty-eight".