71106012 has 30 divisors (see below), whose sum is σ = 185886008. Its totient is φ = 23701896.

The previous prime is 71106011. The next prime is 71106029. The reversal of 71106012 is 21060117.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71106011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 109408 + ... + 110055.

Almost surely, 2^71106012 is an apocalyptic number.

It is an amenable number.

71106012 is an abundant number, since it is smaller than the sum of its proper divisors (114779996).

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

71106012 is a wasteful number, since it uses less digits than its factorization.

71106012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219479 (or 219468 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 71106012 is about 8432.4380815989. The cubic root of 71106012 is about 414.2877646464.

Adding to 71106012 its reverse (21060117), we get a palindrome (92166129).

The spelling of 71106012 in words is "seventy-one million, one hundred six thousand, twelve".