65222279 has 2 divisors, whose sum is σ = 65222280. Its totient is φ = 65222278.

The previous prime is 65222263. The next prime is 65222281. The reversal of 65222279 is 97222256.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65222279 - 2⁴ = 65222263 is a prime.

Together with 65222281, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_3852836 and since 65222279 and 3852836 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65222299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32611139 + 32611140.

It is an arithmetic number, because the mean of its divisors is an integer number (32611140).

Almost surely, 2^65222279 is an apocalyptic number.

65222279 is a deficient number, since it is larger than the sum of its proper divisors (1).

65222279 is an equidigital number, since it uses as much as digits as its factorization.

65222279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 35.

The square root of 65222279 is about 8076.0311415942. The cubic root of 65222279 is about 402.5303738507.

The spelling of 65222279 in words is "sixty-five million, two hundred twenty-two thousand, two hundred seventy-nine".