68417737 has 2 divisors, whose sum is σ = 68417738. Its totient is φ = 68417736.

The previous prime is 68417719. The next prime is 68417743. The reversal of 68417737 is 73771486.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59351616 + 9066121 = 7704^2 + 3011^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68417737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68417693 and 68417702.

It is not a weakly prime, because it can be changed into another prime (68417747) 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, 34208868 + 34208869.

It is an arithmetic number, because the mean of its divisors is an integer number (34208869).

Almost surely, 2^68417737 is an apocalyptic number.

It is an amenable number.

68417737 is a deficient number, since it is larger than the sum of its proper divisors (1).

68417737 is an equidigital number, since it uses as much as digits as its factorization.

68417737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 197568, while the sum is 43.

The square root of 68417737 is about 8271.5014961009. The cubic root of 68417737 is about 408.9996174099. Note that the first 3 decimals are identical.

The spelling of 68417737 in words is "sixty-eight million, four hundred seventeen thousand, seven hundred thirty-seven".