71339671 has 4 divisors (see below), whose sum is σ = 76827352. Its totient is φ = 65851992.

The previous prime is 71339669. The next prime is 71339677. The reversal of 71339671 is 17693317.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17693317 = 4013 ⋅4409.

It is a cyclic number.

It is not a de Polignac number, because 71339671 - 2¹ = 71339669 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71339671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71339677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2743821 + ... + 2743846.

It is an arithmetic number, because the mean of its divisors is an integer number (19206838).

Almost surely, 2^71339671 is an apocalyptic number.

71339671 is a deficient number, since it is larger than the sum of its proper divisors (5487681).

71339671 is a wasteful number, since it uses less digits than its factorization.

71339671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5487680.

The product of its digits is 23814, while the sum is 37.

The square root of 71339671 is about 8446.2814895077. The cubic root of 71339671 is about 414.7410607068.

It can be divided in two parts, 71339 and 671, that added together give a triangular number (72010 = T₃₇₉).

The spelling of 71339671 in words is "seventy-one million, three hundred thirty-nine thousand, six hundred seventy-one".