650105321 has 8 divisors (see below), whose sum is σ = 656616840. Its totient is φ = 643603968.

The previous prime is 650105317. The next prime is 650105329. The reversal of 650105321 is 123501056.

It can be written as a sum of positive squares in 4 ways, for example, as 157753600 + 492351721 = 12560^2 + 22189^2 .

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 650105321 - 2² = 650105317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (650105329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218375 + ... + 221331.

It is an arithmetic number, because the mean of its divisors is an integer number (82077105).

Almost surely, 2^650105321 is an apocalyptic number.

It is an amenable number.

650105321 is a deficient number, since it is larger than the sum of its proper divisors (6511519).

650105321 is a wasteful number, since it uses less digits than its factorization.

650105321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5083.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 650105321 is about 25497.1629990476. The cubic root of 650105321 is about 866.2858890546.

Adding to 650105321 its reverse (123501056), we get a palindrome (773606377).

The spelling of 650105321 in words is "six hundred fifty million, one hundred five thousand, three hundred twenty-one".