65299939 has 2 divisors, whose sum is σ = 65299940. Its totient is φ = 65299938.

The previous prime is 65299937. The next prime is 65299957. The reversal of 65299939 is 93999256.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65299939 - 2¹ = 65299937 is a prime.

Together with 65299937, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (65299937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32649969 + 32649970.

It is an arithmetic number, because the mean of its divisors is an integer number (32649970).

Almost surely, 2^65299939 is an apocalyptic number.

65299939 is a deficient number, since it is larger than the sum of its proper divisors (1).

65299939 is an equidigital number, since it uses as much as digits as its factorization.

65299939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1180980, while the sum is 52.

The square root of 65299939 is about 8080.8377659745. The cubic root of 65299939 is about 402.6900744430.

The spelling of 65299939 in words is "sixty-five million, two hundred ninety-nine thousand, nine hundred thirty-nine".