68849633 has 2 divisors, whose sum is σ = 68849634. Its totient is φ = 68849632.

The previous prime is 68849617. The next prime is 68849639. The reversal of 68849633 is 33694886.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62837329 + 6012304 = 7927^2 + 2452^2 .

It is a cyclic number.

It is not a de Polignac number, because 68849633 - 2⁴ = 68849617 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (68849639) 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, 34424816 + 34424817.

It is an arithmetic number, because the mean of its divisors is an integer number (34424817).

Almost surely, 2^68849633 is an apocalyptic number.

It is an amenable number.

68849633 is a deficient number, since it is larger than the sum of its proper divisors (1).

68849633 is an equidigital number, since it uses as much as digits as its factorization.

68849633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 746496, while the sum is 47.

The square root of 68849633 is about 8297.5678966791. The cubic root of 68849633 is about 409.8584341712.

The spelling of 68849633 in words is "sixty-eight million, eight hundred forty-nine thousand, six hundred thirty-three".