68689417 has 2 divisors, whose sum is σ = 68689418. Its totient is φ = 68689416.

The previous prime is 68689409. The next prime is 68689421. The reversal of 68689417 is 71498686.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66243321 + 2446096 = 8139^2 + 1564^2 .

It is a cyclic number.

It is not a de Polignac number, because 68689417 - 2³ = 68689409 is a prime.

It is not a weakly prime, because it can be changed into another prime (68689217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34344708 + 34344709.

It is an arithmetic number, because the mean of its divisors is an integer number (34344709).

Almost surely, 2^68689417 is an apocalyptic number.

It is an amenable number.

68689417 is a deficient number, since it is larger than the sum of its proper divisors (1).

68689417 is an equidigital number, since it uses as much as digits as its factorization.

68689417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 49.

The square root of 68689417 is about 8287.9078783490. The cubic root of 68689417 is about 409.5402679601.

The spelling of 68689417 in words is "sixty-eight million, six hundred eighty-nine thousand, four hundred seventeen".