71164443 has 32 divisors (see below), whose sum is σ = 116121600. Its totient is φ = 37859616.

The previous prime is 71164427. The next prime is 71164487. The reversal of 71164443 is 34446117.

It is not a de Polignac number, because 71164443 - 2⁴ = 71164427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71164443.

It is not an unprimeable number, because it can be changed into a prime (71164043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22030 + ... + 25052.

It is an arithmetic number, because the mean of its divisors is an integer number (3628800).

Almost surely, 2^71164443 is an apocalyptic number.

71164443 is a deficient number, since it is larger than the sum of its proper divisors (44957157).

71164443 is a wasteful number, since it uses less digits than its factorization.

71164443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3111.

The product of its digits is 8064, while the sum is 30.

The square root of 71164443 is about 8435.9020264581. The cubic root of 71164443 is about 414.4012131908.

The spelling of 71164443 in words is "seventy-one million, one hundred sixty-four thousand, four hundred forty-three".