68209433 has 2 divisors, whose sum is σ = 68209434. Its totient is φ = 68209432.

The previous prime is 68209343. The next prime is 68209459. The reversal of 68209433 is 33490286.

It is a happy number.

Together with previous prime (68209343) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47706649 + 20502784 = 6907^2 + 4528^2 .

It is a cyclic number.

It is not a de Polignac number, because 68209433 - 2⁸ = 68209177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68209393 and 68209402.

It is not a weakly prime, because it can be changed into another prime (68209633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34104716 + 34104717.

It is an arithmetic number, because the mean of its divisors is an integer number (34104717).

Almost surely, 2^68209433 is an apocalyptic number.

It is an amenable number.

68209433 is a deficient number, since it is larger than the sum of its proper divisors (1).

68209433 is an equidigital number, since it uses as much as digits as its factorization.

68209433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 68209433 is about 8258.9002294494. The cubic root of 68209433 is about 408.5841166486.

The spelling of 68209433 in words is "sixty-eight million, two hundred nine thousand, four hundred thirty-three".