65530247 has 2 divisors, whose sum is σ = 65530248. Its totient is φ = 65530246.

The previous prime is 65530211. The next prime is 65530273. The reversal of 65530247 is 74203556.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65530247 - 2⁸ = 65529991 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65530447) 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, 32765123 + 32765124.

It is an arithmetic number, because the mean of its divisors is an integer number (32765124).

Almost surely, 2^65530247 is an apocalyptic number.

65530247 is a deficient number, since it is larger than the sum of its proper divisors (1).

65530247 is an equidigital number, since it uses as much as digits as its factorization.

65530247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 65530247 is about 8095.0754783387. The cubic root of 65530247 is about 403.1629382159.

The spelling of 65530247 in words is "sixty-five million, five hundred thirty thousand, two hundred forty-seven".