65849261 has 2 divisors, whose sum is σ = 65849262. Its totient is φ = 65849260.

The previous prime is 65849243. The next prime is 65849291. The reversal of 65849261 is 16294856.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48916036 + 16933225 = 6994^2 + 4115^2 .

It is a cyclic number.

It is not a de Polignac number, because 65849261 - 2⁶ = 65849197 is a prime.

It is a super-2 number, since 2×65849261² = 8672250348492242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65849291) 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, 32924630 + 32924631.

It is an arithmetic number, because the mean of its divisors is an integer number (32924631).

Almost surely, 2^65849261 is an apocalyptic number.

It is an amenable number.

65849261 is a deficient number, since it is larger than the sum of its proper divisors (1).

65849261 is an equidigital number, since it uses as much as digits as its factorization.

65849261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 41.

The square root of 65849261 is about 8114.7557572610. The cubic root of 65849261 is about 403.8161046699.

The spelling of 65849261 in words is "sixty-five million, eight hundred forty-nine thousand, two hundred sixty-one".