71711536 has 40 divisors (see below), whose sum is σ = 151049360. Its totient is φ = 32783616.

The previous prime is 71711531. The next prime is 71711537. The reversal of 71711536 is 63511717.

It is a junction number, because it is equal to n+sod(n) for n = 71711498 and 71711507.

It is not an unprimeable number, because it can be changed into a prime (71711531) 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 7 ways as a sum of consecutive naturals, for example, 21091 + ... + 24253.

It is an arithmetic number, because the mean of its divisors is an integer number (3776234).

Almost surely, 2^71711536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71711536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75524680).

71711536 is an abundant number, since it is smaller than the sum of its proper divisors (79337824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71711536 is a wasteful number, since it uses less digits than its factorization.

71711536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3293 (or 3287 counting only the distinct ones).

The product of its digits is 4410, while the sum is 31.

The square root of 71711536 is about 8468.2664105471. The cubic root of 71711536 is about 415.4604382990.

The spelling of 71711536 in words is "seventy-one million, seven hundred eleven thousand, five hundred thirty-six".