82659665 has 32 divisors (see below), whose sum is σ = 112285440. Its totient is φ = 57888000.

The previous prime is 82659659. The next prime is 82659667. The reversal of 82659665 is 56695628.

It is not a de Polignac number, because 82659665 - 2¹⁶ = 82594129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82659667) 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 31 ways as a sum of consecutive naturals, for example, 307151 + ... + 307419.

It is an arithmetic number, because the mean of its divisors is an integer number (3508920).

Almost surely, 2^82659665 is an apocalyptic number.

It is an amenable number.

82659665 is a deficient number, since it is larger than the sum of its proper divisors (29625775).

82659665 is a wasteful number, since it uses less digits than its factorization.

82659665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473.

The product of its digits is 777600, while the sum is 47.

The square root of 82659665 is about 9091.7360828392. The cubic root of 82659665 is about 435.6100394059.

The spelling of 82659665 in words is "eighty-two million, six hundred fifty-nine thousand, six hundred sixty-five".