650521641 has 32 divisors (see below), whose sum is σ = 1085027328. Its totient is φ = 336795840.

The previous prime is 650521637. The next prime is 650521657. The reversal of 650521641 is 146125056.

It is not a de Polignac number, because 650521641 - 2² = 650521637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 650521599 and 650521608.

It is not an unprimeable number, because it can be changed into a prime (650523641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66331 + ... + 75503.

It is an arithmetic number, because the mean of its divisors is an integer number (33907104).

Almost surely, 2^650521641 is an apocalyptic number.

It is an amenable number.

650521641 is a deficient number, since it is larger than the sum of its proper divisors (434505687).

650521641 is a wasteful number, since it uses less digits than its factorization.

650521641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9501.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 650521641 is about 25505.3257379709. The cubic root of 650521641 is about 866.4707694482.

Adding to 650521641 its reverse (146125056), we get a palindrome (796646697).

The spelling of 650521641 in words is "six hundred fifty million, five hundred twenty-one thousand, six hundred forty-one".