71040017 has 4 divisors (see below), whose sum is σ = 71264436. Its totient is φ = 70815600.

The previous prime is 71040007. The next prime is 71040029. The reversal of 71040017 is 71004017.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21492496 + 49547521 = 4636^2 + 7039^2 .

It is a cyclic number.

It is not a de Polignac number, because 71040017 - 2⁴ = 71040001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71040007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111734 + ... + 112367.

It is an arithmetic number, because the mean of its divisors is an integer number (17816109).

Almost surely, 2^71040017 is an apocalyptic number.

It is an amenable number.

71040017 is a deficient number, since it is larger than the sum of its proper divisors (224419).

71040017 is a wasteful number, since it uses less digits than its factorization.

71040017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224418.

The product of its (nonzero) digits is 196, while the sum is 20.

The square root of 71040017 is about 8428.5240107625. The cubic root of 71040017 is about 414.1595552157.

The spelling of 71040017 in words is "seventy-one million, forty thousand, seventeen".