82080905 has 8 divisors (see below), whose sum is σ = 102779712. Its totient is φ = 62809648.

The previous prime is 82080881. The next prime is 82080919. The reversal of 82080905 is 50908028.

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

It is a cyclic number.

It is not a de Polignac number, because 82080905 - 2⁶ = 82080841 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356759 + ... + 356988.

It is an arithmetic number, because the mean of its divisors is an integer number (12847464).

Almost surely, 2^82080905 is an apocalyptic number.

It is an amenable number.

82080905 is a deficient number, since it is larger than the sum of its proper divisors (20698807).

82080905 is a wasteful number, since it uses less digits than its factorization.

82080905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713775.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 82080905 is about 9059.8512680949. The cubic root of 82080905 is about 434.5909838366.

The spelling of 82080905 in words is "eighty-two million, eighty thousand, nine hundred five".