68853217 has 2 divisors, whose sum is σ = 68853218. Its totient is φ = 68853216.

The previous prime is 68853203. The next prime is 68853259. The reversal of 68853217 is 71235886.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60233121 + 8620096 = 7761^2 + 2936^2 .

It is a cyclic number.

It is not a de Polignac number, because 68853217 - 2¹¹ = 68851169 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68853217.

It is not a weakly prime, because it can be changed into another prime (68850217) 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, 34426608 + 34426609.

It is an arithmetic number, because the mean of its divisors is an integer number (34426609).

Almost surely, 2^68853217 is an apocalyptic number.

It is an amenable number.

68853217 is a deficient number, since it is larger than the sum of its proper divisors (1).

68853217 is an equidigital number, since it uses as much as digits as its factorization.

68853217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 40.

The square root of 68853217 is about 8297.7838607667. The cubic root of 68853217 is about 409.8655458390.

The spelling of 68853217 in words is "sixty-eight million, eight hundred fifty-three thousand, two hundred seventeen".