650022641 has 4 divisors (see below), whose sum is σ = 650279412. Its totient is φ = 649765872.

The previous prime is 650022613. The next prime is 650022671. The reversal of 650022641 is 146220056.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 488631025 + 161391616 = 22105^2 + 12704^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-650022641 is a prime.

It is a super-2 number, since 2×650022641² = 845058867625229762, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 650022641.

It is not an unprimeable number, because it can be changed into a prime (650022671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124550 + ... + 129663.

It is an arithmetic number, because the mean of its divisors is an integer number (162569853).

Almost surely, 2^650022641 is an apocalyptic number.

It is an amenable number.

650022641 is a deficient number, since it is larger than the sum of its proper divisors (256771).

650022641 is a wasteful number, since it uses less digits than its factorization.

650022641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256770.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 650022641 is about 25495.5415906389. The cubic root of 650022641 is about 866.2491629265.

Adding to 650022641 its reverse (146220056), we get a palindrome (796242697).

The spelling of 650022641 in words is "six hundred fifty million, twenty-two thousand, six hundred forty-one".