71317712 has 10 divisors (see below), whose sum is σ = 138178098. Its totient is φ = 35658848.

The previous prime is 71317711. The next prime is 71317751. The reversal of 71317712 is 21771317.

It can be written as a sum of positive squares in only one way, i.e., 37258816 + 34058896 = 6104^2 + 5836^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71317711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2228663 + ... + 2228694.

Almost surely, 2^71317712 is an apocalyptic number.

It is an amenable number.

71317712 is a deficient number, since it is larger than the sum of its proper divisors (66860386).

71317712 is a wasteful number, since it uses less digits than its factorization.

71317712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4457365 (or 4457359 counting only the distinct ones).

The product of its digits is 2058, while the sum is 29.

The square root of 71317712 is about 8444.9814683041. The cubic root of 71317712 is about 414.6985026488.

The spelling of 71317712 in words is "seventy-one million, three hundred seventeen thousand, seven hundred twelve".