83871705 has 16 divisors (see below), whose sum is σ = 136728000. Its totient is φ = 43887168.

The previous prime is 83871679. The next prime is 83871707. The reversal of 83871705 is 50717838.

It is not a de Polignac number, because 83871705 - 2⁵ = 83871673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83871707) 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 15 ways as a sum of consecutive naturals, for example, 51955 + ... + 53544.

It is an arithmetic number, because the mean of its divisors is an integer number (8545500).

Almost surely, 2^83871705 is an apocalyptic number.

It is an amenable number.

83871705 is a deficient number, since it is larger than the sum of its proper divisors (52856295).

83871705 is a wasteful number, since it uses less digits than its factorization.

83871705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105560.

The product of its (nonzero) digits is 47040, while the sum is 39.

The square root of 83871705 is about 9158.1496493560. The cubic root of 83871705 is about 437.7288359319.

The spelling of 83871705 in words is "eighty-three million, eight hundred seventy-one thousand, seven hundred five".