650945394 has 72 divisors (see below), whose sum is σ = 1583487360. Its totient is φ = 193028880.

The previous prime is 650945387. The next prime is 650945413. The reversal of 650945394 is 493549056.

650945394 is a `hidden beast` number, since 6 + 509 + 4 + 53 + 94 = 666.

650945394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 99187 + ... + 105545.

It is an arithmetic number, because the mean of its divisors is an integer number (21992880).

Almost surely, 2^650945394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 650945394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (791743680).

650945394 is an abundant number, since it is smaller than the sum of its proper divisors (932541966).

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

650945394 is a wasteful number, since it uses less digits than its factorization.

650945394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6436 (or 6422 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

The square root of 650945394 is about 25513.6315329668. The cubic root of 650945394 is about 866.6588697195.

The spelling of 650945394 in words is "six hundred fifty million, nine hundred forty-five thousand, three hundred ninety-four".