71161743 has 8 divisors (see below), whose sum is σ = 94980400. Its totient is φ = 47392128.

The previous prime is 71161723. The next prime is 71161759. The reversal of 71161743 is 34716117.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71161743 - 2⁸ = 71161487 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71161743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71161723) 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 7 ways as a sum of consecutive naturals, for example, 8728 + ... + 14781.

It is an arithmetic number, because the mean of its divisors is an integer number (11872550).

Almost surely, 2^71161743 is an apocalyptic number.

71161743 is a deficient number, since it is larger than the sum of its proper divisors (23818657).

71161743 is a wasteful number, since it uses less digits than its factorization.

71161743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24521.

The product of its digits is 3528, while the sum is 30.

The square root of 71161743 is about 8435.7419946321. The cubic root of 71161743 is about 414.3959722897.

The spelling of 71161743 in words is "seventy-one million, one hundred sixty-one thousand, seven hundred forty-three".