65899 has 2 divisors, whose sum is σ = 65900. Its totient is φ = 65898.

The previous prime is 65881. The next prime is 65921. The reversal of 65899 is 99856.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65899 - 2⁵ = 65867 is a prime.

It is a plaindrome in base 11.

It is not a weakly prime, because it can be changed into another prime (65809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32949 + 32950.

It is an arithmetic number, because the mean of its divisors is an integer number (32950).

2⁶⁵⁸⁹⁹ is an apocalyptic number.

65899 is a deficient number, since it is larger than the sum of its proper divisors (1).

65899 is an equidigital number, since it uses as much as digits as its factorization.

65899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 37.

The square root of 65899 is about 256.7080053290. The cubic root of 65899 is about 40.3917752757.

It can be divided in two parts, 658 and 99, that added together give a palindrome (757).

The spelling of 65899 in words is "sixty-five thousand, eight hundred ninety-nine".