71768017 has 2 divisors, whose sum is σ = 71768018. Its totient is φ = 71768016.

The previous prime is 71768009. The next prime is 71768051. The reversal of 71768017 is 71086717.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70829056 + 938961 = 8416^2 + 969^2 .

It is a cyclic number.

It is not a de Polignac number, because 71768017 - 2³ = 71768009 is a prime.

It is a super-2 number, since 2×71768017² = 10301296528224578, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71768617) 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, 35884008 + 35884009.

It is an arithmetic number, because the mean of its divisors is an integer number (35884009).

Almost surely, 2^71768017 is an apocalyptic number.

It is an amenable number.

71768017 is a deficient number, since it is larger than the sum of its proper divisors (1).

71768017 is an equidigital number, since it uses as much as digits as its factorization.

71768017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16464, while the sum is 37.

The square root of 71768017 is about 8471.6006161764. The cubic root of 71768017 is about 415.5694838092.

The spelling of 71768017 in words is "seventy-one million, seven hundred sixty-eight thousand, seventeen".