68871017 has 2 divisors, whose sum is σ = 68871018. Its totient is φ = 68871016.

The previous prime is 68871007. The next prime is 68871031. The reversal of 68871017 is 71017886.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60668521 + 8202496 = 7789^2 + 2864^2 .

It is a cyclic number.

It is not a de Polignac number, because 68871017 - 2⁴ = 68871001 is a prime.

It is a super-2 number, since 2×68871017² = 9486433965228578, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (68871007) 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, 34435508 + 34435509.

It is an arithmetic number, because the mean of its divisors is an integer number (34435509).

Almost surely, 2^68871017 is an apocalyptic number.

It is an amenable number.

68871017 is a deficient number, since it is larger than the sum of its proper divisors (1).

68871017 is an equidigital number, since it uses as much as digits as its factorization.

68871017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 38.

The square root of 68871017 is about 8298.8563669942. The cubic root of 68871017 is about 409.9008624077.

The spelling of 68871017 in words is "sixty-eight million, eight hundred seventy-one thousand, seventeen".