82615585 has 16 divisors (see below), whose sum is σ = 107971920. Its totient is φ = 60318720.

The previous prime is 82615571. The next prime is 82615607. The reversal of 82615585 is 58551628.

It can be written as a sum of positive squares in 8 ways, for example, as 44076321 + 38539264 = 6639^2 + 6208^2 .

It is not a de Polignac number, because 82615585 - 2⁹ = 82615073 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1356 + ... + 12925.

It is an arithmetic number, because the mean of its divisors is an integer number (6748245).

Almost surely, 2^82615585 is an apocalyptic number.

It is an amenable number.

82615585 is a deficient number, since it is larger than the sum of its proper divisors (25356335).

82615585 is a wasteful number, since it uses less digits than its factorization.

82615585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14388.

The product of its digits is 96000, while the sum is 40.

The square root of 82615585 is about 9089.3115800923. The cubic root of 82615585 is about 435.5325929077.

The spelling of 82615585 in words is "eighty-two million, six hundred fifteen thousand, five hundred eighty-five".