650065221 has 24 divisors (see below), whose sum is σ = 1064437920. Its totient is φ = 378984096.

The previous prime is 650065217. The next prime is 650065313. The reversal of 650065221 is 122560056.

650065221 is a `hidden beast` number, since 6 + 5 + 0 + 0 + 652 + 2 + 1 = 666.

It is not a de Polignac number, because 650065221 - 2² = 650065217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650065201) 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 23 ways as a sum of consecutive naturals, for example, 143991 + ... + 148436.

It is an arithmetic number, because the mean of its divisors is an integer number (44351580).

Almost surely, 2^650065221 is an apocalyptic number.

It is an amenable number.

650065221 is a deficient number, since it is larger than the sum of its proper divisors (414372699).

650065221 is a wasteful number, since it uses less digits than its factorization.

650065221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292465 (or 292462 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 650065221 is about 25496.3766249246. The cubic root of 650065221 is about 866.2680771825.

The spelling of 650065221 in words is "six hundred fifty million, sixty-five thousand, two hundred twenty-one".