71629713 has 6 divisors (see below), whose sum is σ = 103465154. Its totient is φ = 47753136.

The previous prime is 71629711. The next prime is 71629729. The reversal of 71629713 is 31792617.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 43401744 + 28227969 = 6588^2 + 5313^2 .

It is not a de Polignac number, because 71629713 - 2¹ = 71629711 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71629711) 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 in 5 ways as a sum of consecutive naturals, for example, 3979420 + ... + 3979437.

Almost surely, 2^71629713 is an apocalyptic number.

It is an amenable number.

71629713 is a deficient number, since it is larger than the sum of its proper divisors (31835441).

71629713 is a wasteful number, since it uses less digits than its factorization.

71629713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7958863 (or 7958860 counting only the distinct ones).

The product of its digits is 15876, while the sum is 36.

The square root of 71629713 is about 8463.4338775700. The cubic root of 71629713 is about 415.3023644441.

The spelling of 71629713 in words is "seventy-one million, six hundred twenty-nine thousand, seven hundred thirteen".