68593817 has 2 divisors, whose sum is σ = 68593818. Its totient is φ = 68593816.

The previous prime is 68593807. The next prime is 68593871. The reversal of 68593817 is 71839586.

It is a happy number.

Together with next prime (68593871) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42133081 + 26460736 = 6491^2 + 5144^2 .

It is a cyclic number.

It is not a de Polignac number, because 68593817 - 2⁶ = 68593753 is a prime.

It is a super-2 number, since 2×68593817² = 9410223461258978, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (68593807) 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, 34296908 + 34296909.

It is an arithmetic number, because the mean of its divisors is an integer number (34296909).

Almost surely, 2^68593817 is an apocalyptic number.

It is an amenable number.

68593817 is a deficient number, since it is larger than the sum of its proper divisors (1).

68593817 is an equidigital number, since it uses as much as digits as its factorization.

68593817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 47.

The square root of 68593817 is about 8282.1384315888. The cubic root of 68593817 is about 409.3501842036.

The spelling of 68593817 in words is "sixty-eight million, five hundred ninety-three thousand, eight hundred seventeen".