65299999 has 2 divisors, whose sum is σ = 65300000. Its totient is φ = 65299998.

The previous prime is 65299973. The next prime is 65300021. The reversal of 65299999 is 99999256.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65299999 - 2¹⁵ = 65267231 is a prime.

65299999 is a modest number, since divided by 9999 gives 6529 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65299939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32649999 + 32650000.

It is an arithmetic number, because the mean of its divisors is an integer number (32650000).

Almost surely, 2^65299999 is an apocalyptic number.

65299999 is a deficient number, since it is larger than the sum of its proper divisors (1).

65299999 is an equidigital number, since it uses as much as digits as its factorization.

65299999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3542940, while the sum is 58.

The square root of 65299999 is about 8080.8414784600. The cubic root of 65299999 is about 402.6901977785.

The spelling of 65299999 in words is "sixty-five million, two hundred ninety-nine thousand, nine hundred ninety-nine".