82112705 has 8 divisors (see below), whose sum is σ = 98584872. Its totient is φ = 65657088.

The previous prime is 82112689. The next prime is 82112747. The reversal of 82112705 is 50721128.

It can be written as a sum of positive squares in 4 ways, for example, as 39589264 + 42523441 = 6292^2 + 6521^2 .

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 82112705 - 2⁴ = 82112689 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, 14087 + ... + 19043.

It is an arithmetic number, because the mean of its divisors is an integer number (12323109).

Almost surely, 2^82112705 is an apocalyptic number.

It is an amenable number.

82112705 is a deficient number, since it is larger than the sum of its proper divisors (16472167).

82112705 is a wasteful number, since it uses less digits than its factorization.

82112705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8275.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 82112705 is about 9061.6060938445. The cubic root of 82112705 is about 434.6471000509.

The spelling of 82112705 in words is "eighty-two million, one hundred twelve thousand, seven hundred five".