68545733 has 2 divisors, whose sum is σ = 68545734. Its totient is φ = 68545732.

The previous prime is 68545703. The next prime is 68545739. The reversal of 68545733 is 33754586.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68525284 + 20449 = 8278^2 + 143^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68545733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68545739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34272866 + 34272867.

It is an arithmetic number, because the mean of its divisors is an integer number (34272867).

Almost surely, 2^68545733 is an apocalyptic number.

It is an amenable number.

68545733 is a deficient number, since it is larger than the sum of its proper divisors (1).

68545733 is an equidigital number, since it uses as much as digits as its factorization.

68545733 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 302400, while the sum is 41.

The square root of 68545733 is about 8279.2350492059. The cubic root of 68545733 is about 409.2545108801.

The spelling of 68545733 in words is "sixty-eight million, five hundred forty-five thousand, seven hundred thirty-three".