655465219 has 2 divisors, whose sum is σ = 655465220. Its totient is φ = 655465218.

The previous prime is 655465159. The next prime is 655465267. The reversal of 655465219 is 912564556.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 655465219 - 2⁷ = 655465091 is a prime.

It is a super-2 number, since 2×655465219² = 859269306637435922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (655460219) 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 as a sum of consecutive naturals, namely, 327732609 + 327732610.

It is an arithmetic number, because the mean of its divisors is an integer number (327732610).

Almost surely, 2^655465219 is an apocalyptic number.

655465219 is a deficient number, since it is larger than the sum of its proper divisors (1).

655465219 is an equidigital number, since it uses as much as digits as its factorization.

655465219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 324000, while the sum is 43.

The square root of 655465219 is about 25602.0549761147. The cubic root of 655465219 is about 868.6601205499.

The spelling of 655465219 in words is "six hundred fifty-five million, four hundred sixty-five thousand, two hundred nineteen".