65268409 has 2 divisors, whose sum is σ = 65268410. Its totient is φ = 65268408.

The previous prime is 65268373. The next prime is 65268421. The reversal of 65268409 is 90486256.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49744809 + 15523600 = 7053^2 + 3940^2 .

It is a cyclic number.

It is not a de Polignac number, because 65268409 - 2¹⁵ = 65235641 is a prime.

It is not a weakly prime, because it can be changed into another prime (65268449) 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, 32634204 + 32634205.

It is an arithmetic number, because the mean of its divisors is an integer number (32634205).

Almost surely, 2^65268409 is an apocalyptic number.

It is an amenable number.

65268409 is a deficient number, since it is larger than the sum of its proper divisors (1).

65268409 is an equidigital number, since it uses as much as digits as its factorization.

65268409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 65268409 is about 8078.8866188355. The cubic root of 65268409 is about 402.6252511965.

The spelling of 65268409 in words is "sixty-five million, two hundred sixty-eight thousand, four hundred nine".