83871071 has 4 divisors (see below), whose sum is σ = 84474600. Its totient is φ = 83267544.

The previous prime is 83871059. The next prime is 83871079. The reversal of 83871071 is 17017838.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83871071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83871079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 301556 + ... + 301833.

It is an arithmetic number, because the mean of its divisors is an integer number (21118650).

Almost surely, 2^83871071 is an apocalyptic number.

83871071 is a deficient number, since it is larger than the sum of its proper divisors (603529).

83871071 is a wasteful number, since it uses less digits than its factorization.

83871071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603528.

The product of its (nonzero) digits is 9408, while the sum is 35.

The square root of 83871071 is about 9158.1150353116. The cubic root of 83871071 is about 437.7277329744.

The spelling of 83871071 in words is "eighty-three million, eight hundred seventy-one thousand, seventy-one".