68650717 has 2 divisors, whose sum is σ = 68650718. Its totient is φ = 68650716.

The previous prime is 68650697. The next prime is 68650721. The reversal of 68650717 is 71705686.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43309561 + 25341156 = 6581^2 + 5034^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68650717 is a prime.

It is a super-2 number, since 2×68650717² = 9425841889228178, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68650717.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68650117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34325358 + 34325359.

It is an arithmetic number, because the mean of its divisors is an integer number (34325359).

Almost surely, 2^68650717 is an apocalyptic number.

It is an amenable number.

68650717 is a deficient number, since it is larger than the sum of its proper divisors (1).

68650717 is an equidigital number, since it uses as much as digits as its factorization.

68650717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 68650717 is about 8285.5728226840. The cubic root of 68650717 is about 409.4633410889.

The spelling of 68650717 in words is "sixty-eight million, six hundred fifty thousand, seven hundred seventeen".