68399417 has 2 divisors, whose sum is σ = 68399418. Its totient is φ = 68399416.

The previous prime is 68399399. The next prime is 68399431. The reversal of 68399417 is 71499386.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63664441 + 4734976 = 7979^2 + 2176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68399417 is a prime.

It is not a weakly prime, because it can be changed into another prime (68399477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34199708 + 34199709.

It is an arithmetic number, because the mean of its divisors is an integer number (34199709).

Almost surely, 2^68399417 is an apocalyptic number.

It is an amenable number.

68399417 is a deficient number, since it is larger than the sum of its proper divisors (1).

68399417 is an equidigital number, since it uses as much as digits as its factorization.

68399417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 47.

The square root of 68399417 is about 8270.3940051245. The cubic root of 68399417 is about 408.9631086418.

The spelling of 68399417 in words is "sixty-eight million, three hundred ninety-nine thousand, four hundred seventeen".