82658505 has 16 divisors (see below), whose sum is σ = 140033664. Its totient is φ = 41491200.

The previous prime is 82658489. The next prime is 82658519. The reversal of 82658505 is 50585628.

It is not a de Polignac number, because 82658505 - 2⁴ = 82658489 is a prime.

It is a Curzon number.

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, 161821 + ... + 162330.

It is an arithmetic number, because the mean of its divisors is an integer number (8752104).

Almost surely, 2^82658505 is an apocalyptic number.

82658505 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

82658505 is a deficient number, since it is larger than the sum of its proper divisors (57375159).

82658505 is a wasteful number, since it uses less digits than its factorization.

82658505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324176.

The product of its (nonzero) digits is 96000, while the sum is 39.

The square root of 82658505 is about 9091.6722884187. The cubic root of 82658505 is about 435.6080016929.

The spelling of 82658505 in words is "eighty-two million, six hundred fifty-eight thousand, five hundred five".