82708305 has 8 divisors (see below), whose sum is σ = 132333312. Its totient is φ = 44111088.

The previous prime is 82708289. The next prime is 82708309. The reversal of 82708305 is 50380728.

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

It is not a de Polignac number, because 82708305 - 2⁴ = 82708289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82708309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2756929 + ... + 2756958.

It is an arithmetic number, because the mean of its divisors is an integer number (16541664).

Almost surely, 2^82708305 is an apocalyptic number.

It is an amenable number.

82708305 is a deficient number, since it is larger than the sum of its proper divisors (49625007).

82708305 is a wasteful number, since it uses less digits than its factorization.

82708305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5513895.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 82708305 is about 9094.4106461057. The cubic root of 82708305 is about 435.6954656644.

The spelling of 82708305 in words is "eighty-two million, seven hundred eight thousand, three hundred five".