71011612 has 24 divisors (see below), whose sum is σ = 142984800. Its totient is φ = 30227520.

The previous prime is 71011597. The next prime is 71011613. The reversal of 71011612 is 21611017.

It is a self number, because there is not a number n which added to its sum of digits gives 71011612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71011613) 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 7 ways as a sum of consecutive naturals, for example, 4339 + ... + 12682.

It is an arithmetic number, because the mean of its divisors is an integer number (5957700).

Almost surely, 2^71011612 is an apocalyptic number.

It is an amenable number.

71011612 is an abundant number, since it is smaller than the sum of its proper divisors (71973188).

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

71011612 is a wasteful number, since it uses less digits than its factorization.

71011612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17181 (or 17179 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 19.

The square root of 71011612 is about 8426.8387904362. The cubic root of 71011612 is about 414.1043479726.

Adding to 71011612 its reverse (21611017), we get a palindrome (92622629).

The spelling of 71011612 in words is "seventy-one million, eleven thousand, six hundred twelve".