71112644 has 18 divisors (see below), whose sum is σ = 126859530. Its totient is φ = 34879936.

The previous prime is 71112637. The next prime is 71112647. The reversal of 71112644 is 44621117.

It can be written as a sum of positive squares in 3 ways, for example, as 33756100 + 37356544 = 5810^2 + 6112^2 .

It is not an unprimeable number, because it can be changed into a prime (71112647) 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, 8072 + ... + 14400.

Almost surely, 2^71112644 is an apocalyptic number.

It is an amenable number.

71112644 is a deficient number, since it is larger than the sum of its proper divisors (55746886).

71112644 is a wasteful number, since it uses less digits than its factorization.

71112644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6439 (or 6384 counting only the distinct ones).

The product of its digits is 1344, while the sum is 26.

The square root of 71112644 is about 8432.8313157563. The cubic root of 71112644 is about 414.3006443405.

The spelling of 71112644 in words is "seventy-one million, one hundred twelve thousand, six hundred forty-four".