83680005 has 16 divisors (see below), whose sum is σ = 138207744. Its totient is φ = 43189440.

The previous prime is 83679997. The next prime is 83680007. The reversal of 83680005 is 50008638.

It is not a de Polignac number, because 83680005 - 2³ = 83679997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83680007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89514 + ... + 90443.

It is an arithmetic number, because the mean of its divisors is an integer number (8637984).

Almost surely, 2^83680005 is an apocalyptic number.

It is an amenable number.

83680005 is a deficient number, since it is larger than the sum of its proper divisors (54527739).

83680005 is a wasteful number, since it uses less digits than its factorization.

83680005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179996.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 83680005 is about 9147.6775741168. The cubic root of 83680005 is about 437.3950855914.

The spelling of 83680005 in words is "eighty-three million, six hundred eighty thousand, five".