65958223 has 2 divisors, whose sum is σ = 65958224. Its totient is φ = 65958222.

The previous prime is 65958197. The next prime is 65958257. The reversal of 65958223 is 32285956.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65958223 - 2⁹ = 65957711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65908223) 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 as a sum of consecutive naturals, namely, 32979111 + 32979112.

It is an arithmetic number, because the mean of its divisors is an integer number (32979112).

Almost surely, 2^65958223 is an apocalyptic number.

65958223 is a deficient number, since it is larger than the sum of its proper divisors (1).

65958223 is an equidigital number, since it uses as much as digits as its factorization.

65958223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 40.

The square root of 65958223 is about 8121.4668010157. The cubic root of 65958223 is about 404.0387159413.

The spelling of 65958223 in words is "sixty-five million, nine hundred fifty-eight thousand, two hundred twenty-three".