65849291 has 2 divisors, whose sum is σ = 65849292. Its totient is φ = 65849290.

The previous prime is 65849261. The next prime is 65849293. The reversal of 65849291 is 19294856.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65849291 is a prime.

It is a super-2 number, since 2×65849291² = 8672258250405362, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 65849293, 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 (65849293) 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, 32924645 + 32924646.

It is an arithmetic number, because the mean of its divisors is an integer number (32924646).

Almost surely, 2^65849291 is an apocalyptic number.

65849291 is a deficient number, since it is larger than the sum of its proper divisors (1).

65849291 is an equidigital number, since it uses as much as digits as its factorization.

65849291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 44.

The square root of 65849291 is about 8114.7576057452. The cubic root of 65849291 is about 403.8161659942.

The spelling of 65849291 in words is "sixty-five million, eight hundred forty-nine thousand, two hundred ninety-one".