65306387 has 2 divisors, whose sum is σ = 65306388. Its totient is φ = 65306386.

The previous prime is 65306323. The next prime is 65306389. The reversal of 65306387 is 78360356.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65306387 - 2⁶ = 65306323 is a prime.

Together with 65306389, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65306387.

It is not a weakly prime, because it can be changed into another prime (65306389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32653193 + 32653194.

It is an arithmetic number, because the mean of its divisors is an integer number (32653194).

Almost surely, 2^65306387 is an apocalyptic number.

65306387 is a deficient number, since it is larger than the sum of its proper divisors (1).

65306387 is an equidigital number, since it uses as much as digits as its factorization.

65306387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 65306387 is about 8081.2367246604. The cubic root of 65306387 is about 402.7033284633.

The spelling of 65306387 in words is "sixty-five million, three hundred six thousand, three hundred eighty-seven".