71164717 has 6 divisors (see below), whose sum is σ = 77060202. Its totient is φ = 65690352.

The previous prime is 71164693. The next prime is 71164739. The reversal of 71164717 is 71746117.

It can be written as a sum of positive squares in 3 ways, for example, as 285156 + 70879561 = 534^2 + 8419^2 .

It is a de Polignac number, because none of the positive numbers 2^k-71164717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71164777) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 210378 + ... + 210715.

It is an arithmetic number, because the mean of its divisors is an integer number (12843367).

Almost surely, 2^71164717 is an apocalyptic number.

It is an amenable number.

71164717 is a deficient number, since it is larger than the sum of its proper divisors (5895485).

71164717 is a wasteful number, since it uses less digits than its factorization.

71164717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421119 (or 421106 counting only the distinct ones).

The product of its digits is 8232, while the sum is 34.

The square root of 71164717 is about 8435.9182665552. The cubic root of 71164717 is about 414.4017450378.

Subtracting from 71164717 its product of digits (8232), we obtain a triangular number (71156485 = T₁₁₉₂₉).

The spelling of 71164717 in words is "seventy-one million, one hundred sixty-four thousand, seven hundred seventeen".