68401933 has 2 divisors, whose sum is σ = 68401934. Its totient is φ = 68401932.

The previous prime is 68401871. The next prime is 68401939. The reversal of 68401933 is 33910486.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67864644 + 537289 = 8238^2 + 733^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68401933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68401939) 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, 34200966 + 34200967.

It is an arithmetic number, because the mean of its divisors is an integer number (34200967).

Almost surely, 2^68401933 is an apocalyptic number.

It is an amenable number.

68401933 is a deficient number, since it is larger than the sum of its proper divisors (1).

68401933 is an equidigital number, since it uses as much as digits as its factorization.

68401933 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 68401933 is about 8270.5461125611. The cubic root of 68401933 is about 408.9681230051.

The spelling of 68401933 in words is "sixty-eight million, four hundred one thousand, nine hundred thirty-three".