71011648 has 28 divisors (see below), whose sum is σ = 141668500. Its totient is φ = 35315712.

The previous prime is 71011639. The next prime is 71011651. The reversal of 71011648 is 84611017.

It can be written as a sum of positive squares in 2 ways, for example, as 7139584 + 63872064 = 2672^2 + 7992^2 .

It is a congruent number.

It is an unprimeable number.

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, 9478 + ... + 15226.

Almost surely, 2^71011648 is an apocalyptic number.

It is an amenable number.

71011648 is a deficient number, since it is larger than the sum of its proper divisors (70656852).

71011648 is a wasteful number, since it uses less digits than its factorization.

71011648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5954 (or 5944 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 71011648 is about 8426.8409264682. The cubic root of 71011648 is about 414.1044179506.

The spelling of 71011648 in words is "seventy-one million, eleven thousand, six hundred forty-eight".