68193973 has 2 divisors, whose sum is σ = 68193974. Its totient is φ = 68193972.

The previous prime is 68193941. The next prime is 68193977. The reversal of 68193973 is 37939186.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65173329 + 3020644 = 8073^2 + 1738^2 .

It is a cyclic number.

It is not a de Polignac number, because 68193973 - 2⁵ = 68193941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68193977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34096986 + 34096987.

It is an arithmetic number, because the mean of its divisors is an integer number (34096987).

Almost surely, 2^68193973 is an apocalyptic number.

It is an amenable number.

68193973 is a deficient number, since it is larger than the sum of its proper divisors (1).

68193973 is an equidigital number, since it uses as much as digits as its factorization.

68193973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 46.

The square root of 68193973 is about 8257.9642164398. The cubic root of 68193973 is about 408.5532451231.

The spelling of 68193973 in words is "sixty-eight million, one hundred ninety-three thousand, nine hundred seventy-three".