650530621 has 8 divisors (see below), whose sum is σ = 702485504. Its totient is φ = 598849200.

The previous prime is 650530609. The next prime is 650530681. The reversal of 650530621 is 126035056.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 650530621 - 2⁵ = 650530589 is a prime.

It is a super-3 number, since 3×650530621³ (a number of 27 digits) contains 333 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 650530621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650530681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63405 + ... + 72946.

It is an arithmetic number, because the mean of its divisors is an integer number (87810688).

Almost surely, 2^650530621 is an apocalyptic number.

It is an amenable number.

650530621 is a deficient number, since it is larger than the sum of its proper divisors (51954883).

650530621 is a wasteful number, since it uses less digits than its factorization.

650530621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136731.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 650530621 is about 25505.5017790280. The cubic root of 650530621 is about 866.4747564391.

Adding to 650530621 its reverse (126035056), we get a palindrome (776565677).

The spelling of 650530621 in words is "six hundred fifty million, five hundred thirty thousand, six hundred twenty-one".