65421299 has 2 divisors, whose sum is σ = 65421300. Its totient is φ = 65421298.

The previous prime is 65421271. The next prime is 65421311. The reversal of 65421299 is 99212456.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65421299 - 2⁸ = 65421043 is a prime.

It is a Chen prime.

It is a zygodrome in base 2.

It is not a weakly prime, because it can be changed into another prime (65421229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32710649 + 32710650.

It is an arithmetic number, because the mean of its divisors is an integer number (32710650).

Almost surely, 2^65421299 is an apocalyptic number.

65421299 is a deficient number, since it is larger than the sum of its proper divisors (1).

65421299 is an equidigital number, since it uses as much as digits as its factorization.

65421299 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 38.

The square root of 65421299 is about 8088.3434027000. The cubic root of 65421299 is about 402.9393866891.

The spelling of 65421299 in words is "sixty-five million, four hundred twenty-one thousand, two hundred ninety-nine".