71440713 has 6 divisors (see below), whose sum is σ = 103192154. Its totient is φ = 47627136.

The previous prime is 71440711. The next prime is 71440729. The reversal of 71440713 is 31704417.

It can be written as a sum of positive squares in only one way, i.e., 67765824 + 3674889 = 8232^2 + 1917^2 .

It is not a de Polignac number, because 71440713 - 2¹ = 71440711 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71440711) 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, 3968920 + ... + 3968937.

Almost surely, 2^71440713 is an apocalyptic number.

It is an amenable number.

71440713 is a deficient number, since it is larger than the sum of its proper divisors (31751441).

71440713 is a wasteful number, since it uses less digits than its factorization.

71440713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7937863 (or 7937860 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 71440713 is about 8452.2608218157. The cubic root of 71440713 is about 414.9367746135.

The spelling of 71440713 in words is "seventy-one million, four hundred forty thousand, seven hundred thirteen".