68682617 has 2 divisors, whose sum is σ = 68682618. Its totient is φ = 68682616.

The previous prime is 68682569. The next prime is 68682637. The reversal of 68682617 is 71628686.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62031376 + 6651241 = 7876^2 + 2579^2 .

It is a cyclic number.

It is not a de Polignac number, because 68682617 - 2²² = 64488313 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68682637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34341308 + 34341309.

It is an arithmetic number, because the mean of its divisors is an integer number (34341309).

Almost surely, 2^68682617 is an apocalyptic number.

It is an amenable number.

68682617 is a deficient number, since it is larger than the sum of its proper divisors (1).

68682617 is an equidigital number, since it uses as much as digits as its factorization.

68682617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 44.

The square root of 68682617 is about 8287.4976319755. The cubic root of 68682617 is about 409.5267531867.

The spelling of 68682617 in words is "sixty-eight million, six hundred eighty-two thousand, six hundred seventeen".