71000743 has 12 divisors (see below), whose sum is σ = 80156440. Its totient is φ = 62797680.

The previous prime is 71000731. The next prime is 71000753. The reversal of 71000743 is 34700017.

It is a de Polignac number, because none of the positive numbers 2^k-71000743 is a prime.

It is a super-2 number, since 2×71000743² = 10082211013104098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71000753) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3453 + ... + 12406.

Almost surely, 2^71000743 is an apocalyptic number.

71000743 is a deficient number, since it is larger than the sum of its proper divisors (9155697).

71000743 is a wasteful number, since it uses less digits than its factorization.

71000743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15918 (or 15907 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 22.

The square root of 71000743 is about 8426.1938619996. The cubic root of 71000743 is about 414.0832193633.

The spelling of 71000743 in words is "seventy-one million, seven hundred forty-three", and thus it is an aban number.