82665712 has 20 divisors (see below), whose sum is σ = 160418056. Its totient is φ = 41267520.

The previous prime is 82665707. The next prime is 82665719. The reversal of 82665712 is 21756628.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82665719) 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 3 ways as a sum of consecutive naturals, for example, 7318 + ... + 14794.

Almost surely, 2^82665712 is an apocalyptic number.

It is an amenable number.

82665712 is a deficient number, since it is larger than the sum of its proper divisors (77752344).

82665712 is a wasteful number, since it uses less digits than its factorization.

82665712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8176 (or 8170 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The square root of 82665712 is about 9092.0686315052. The cubic root of 82665712 is about 435.6206615543.

The spelling of 82665712 in words is "eighty-two million, six hundred sixty-five thousand, seven hundred twelve".