65699 has 2 divisors, whose sum is σ = 65700. Its totient is φ = 65698.

The previous prime is 65687. The next prime is 65701. The reversal of 65699 is 99656.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65699 - 2¹² = 61603 is a prime.

Together with 65701, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 65699.

It is not a weakly prime, because it can be changed into another prime (65609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32849 + 32850.

It is an arithmetic number, because the mean of its divisors is an integer number (32850).

2⁶⁵⁶⁹⁹ is an apocalyptic number.

65699 is a deficient number, since it is larger than the sum of its proper divisors (1).

65699 is an equidigital number, since it uses as much as digits as its factorization.

65699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14580, while the sum is 35.

The square root of 65699 is about 256.3181616663. The cubic root of 65699 is about 40.3508715628.

The spelling of 65699 in words is "sixty-five thousand, six hundred ninety-nine".