650149217 has 2 divisors, whose sum is σ = 650149218. Its totient is φ = 650149216.

The previous prime is 650149153. The next prime is 650149219. The reversal of 650149217 is 712941056.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 603144481 + 47004736 = 24559^2 + 6856^2 .

It is a cyclic number.

It is not a de Polignac number, because 650149217 - 2⁶ = 650149153 is a prime.

Together with 650149219, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (650149219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325074608 + 325074609.

It is an arithmetic number, because the mean of its divisors is an integer number (325074609).

Almost surely, 2^650149217 is an apocalyptic number.

It is an amenable number.

650149217 is a deficient number, since it is larger than the sum of its proper divisors (1).

650149217 is an equidigital number, since it uses as much as digits as its factorization.

650149217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 650149217 is about 25498.0237861682. The cubic root of 650149217 is about 866.3053862183.

The spelling of 650149217 in words is "six hundred fifty million, one hundred forty-nine thousand, two hundred seventeen".