65236009 has 2 divisors, whose sum is σ = 65236010. Its totient is φ = 65236008.

The previous prime is 65235991. The next prime is 65236079. The reversal of 65236009 is 90063256.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43520409 + 21715600 = 6597^2 + 4660^2 .

It is a cyclic number.

It is not a de Polignac number, because 65236009 - 2⁷ = 65235881 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65236079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32618004 + 32618005.

It is an arithmetic number, because the mean of its divisors is an integer number (32618005).

Almost surely, 2^65236009 is an apocalyptic number.

It is an amenable number.

65236009 is a deficient number, since it is larger than the sum of its proper divisors (1).

65236009 is an equidigital number, since it uses as much as digits as its factorization.

65236009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 65236009 is about 8076.8811431146. The cubic root of 65236009 is about 402.5586175447.

The spelling of 65236009 in words is "sixty-five million, two hundred thirty-six thousand, nine".