83871065 has 8 divisors (see below), whose sum is σ = 100722048. Its totient is φ = 67045680.

The previous prime is 83871059. The next prime is 83871079. The reversal of 83871065 is 56017838.

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

It is not a de Polignac number, because 83871065 - 2⁶ = 83871001 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 1760 + ... + 13070.

It is an arithmetic number, because the mean of its divisors is an integer number (12590256).

Almost surely, 2^83871065 is an apocalyptic number.

It is an amenable number.

83871065 is a deficient number, since it is larger than the sum of its proper divisors (16850983).

83871065 is a wasteful number, since it uses less digits than its factorization.

83871065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12799.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 83871065 is about 9158.1147077332. The cubic root of 83871065 is about 437.7277225363.

The spelling of 83871065 in words is "eighty-three million, eight hundred seventy-one thousand, sixty-five".