650722432 has 48 divisors (see below), whose sum is σ = 1316434950. Its totient is φ = 320359424.

The previous prime is 650722427. The next prime is 650722477. The reversal of 650722432 is 234227056.

It can be written as a sum of positive squares in only one way, i.e., 617820736 + 32901696 = 24856^2 + 5736^2 .

It is a junction number, because it is equal to n+sod(n) for n = 650722394 and 650722403.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2722569 + ... + 2722807.

Almost surely, 2^650722432 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 650722432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (658217475).

650722432 is an abundant number, since it is smaller than the sum of its proper divisors (665712518).

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

650722432 is an frugal number, since it uses more digits than its factorization.

650722432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581 (or 330 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 650722432 is about 25509.2616906096. The cubic root of 650722432 is about 866.5599090064.

Adding to 650722432 its reverse (234227056), we get a palindrome (884949488).

The spelling of 650722432 in words is "six hundred fifty million, seven hundred twenty-two thousand, four hundred thirty-two".