65833421 has 2 divisors, whose sum is σ = 65833422. Its totient is φ = 65833420.

The previous prime is 65833409. The next prime is 65833483. The reversal of 65833421 is 12433856.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34975396 + 30858025 = 5914^2 + 5555^2 .

It is a cyclic number.

It is not a de Polignac number, because 65833421 - 2¹⁸ = 65571277 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65832421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32916710 + 32916711.

It is an arithmetic number, because the mean of its divisors is an integer number (32916711).

Almost surely, 2^65833421 is an apocalyptic number.

It is an amenable number.

65833421 is a deficient number, since it is larger than the sum of its proper divisors (1).

65833421 is an equidigital number, since it uses as much as digits as its factorization.

65833421 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 65833421 is about 8113.7796987594. The cubic root of 65833421 is about 403.7837228332.

The spelling of 65833421 in words is "sixty-five million, eight hundred thirty-three thousand, four hundred twenty-one".