650791944 has 96 divisors (see below), whose sum is σ = 1927074240. Its totient is φ = 196771200.

The previous prime is 650791901. The next prime is 650791949. The reversal of 650791944 is 449197056.

It is a self number, because there is not a number n which added to its sum of digits gives 650791944.

It is not an unprimeable number, because it can be changed into a prime (650791949) 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 23 ways as a sum of consecutive naturals, for example, 630709 + ... + 631739.

It is an arithmetic number, because the mean of its divisors is an integer number (20073690).

Almost surely, 2^650791944 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 650791944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (963537120).

650791944 is an abundant number, since it is smaller than the sum of its proper divisors (1276282296).

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

650791944 is a wasteful number, since it uses less digits than its factorization.

650791944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1851 (or 1844 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 650791944 is about 25510.6241397579. The cubic root of 650791944 is about 866.5907640298.

The spelling of 650791944 in words is "six hundred fifty million, seven hundred ninety-one thousand, nine hundred forty-four".