68806417 has 2 divisors, whose sum is σ = 68806418. Its totient is φ = 68806416.

The previous prime is 68806411. The next prime is 68806447. The reversal of 68806417 is 71460886.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63984001 + 4822416 = 7999^2 + 2196^2 .

It is a cyclic number.

It is not a de Polignac number, because 68806417 - 2⁷ = 68806289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68806417.

It is not a weakly prime, because it can be changed into another prime (68806411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34403208 + 34403209.

It is an arithmetic number, because the mean of its divisors is an integer number (34403209).

Almost surely, 2^68806417 is an apocalyptic number.

It is an amenable number.

68806417 is a deficient number, since it is larger than the sum of its proper divisors (1).

68806417 is an equidigital number, since it uses as much as digits as its factorization.

68806417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 68806417 is about 8294.9633513356. The cubic root of 68806417 is about 409.7726619913.

The spelling of 68806417 in words is "sixty-eight million, eight hundred six thousand, four hundred seventeen".