650864394 has 12 divisors (see below), whose sum is σ = 1410206226. Its totient is φ = 216954792.

The previous prime is 650864393. The next prime is 650864441. The reversal of 650864394 is 493468056.

650864394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 620757225 + 30107169 = 24915^2 + 5487^2 .

It is not an unprimeable number, because it can be changed into a prime (650864393) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18079549 + ... + 18079584.

Almost surely, 2^650864394 is an apocalyptic number.

650864394 is an abundant number, since it is smaller than the sum of its proper divisors (759341832).

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

650864394 is a wasteful number, since it uses less digits than its factorization.

650864394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36159141 (or 36159138 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 650864394 is about 25512.0440968575. The cubic root of 650864394 is about 866.6229208360.

The spelling of 650864394 in words is "six hundred fifty million, eight hundred sixty-four thousand, three hundred ninety-four".