65383421 has 2 divisors, whose sum is σ = 65383422. Its totient is φ = 65383420.

The previous prime is 65383379. The next prime is 65383441. The reversal of 65383421 is 12438356.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65383396 + 25 = 8086^2 + 5^2 .

It is a cyclic number.

It is not a de Polignac number, because 65383421 - 2¹⁴ = 65367037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65383441) 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, 32691710 + 32691711.

It is an arithmetic number, because the mean of its divisors is an integer number (32691711).

Almost surely, 2^65383421 is an apocalyptic number.

It is an amenable number.

65383421 is a deficient number, since it is larger than the sum of its proper divisors (1).

65383421 is an equidigital number, since it uses as much as digits as its factorization.

65383421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 32.

The square root of 65383421 is about 8086.0015458816. The cubic root of 65383421 is about 402.8616062880.

The spelling of 65383421 in words is "sixty-five million, three hundred eighty-three thousand, four hundred twenty-one".