806500655 has 32 divisors (see below), whose sum is σ = 1063264320. Its totient is φ = 584755200.

The previous prime is 806500637. The next prime is 806500663. The reversal of 806500655 is 556005608.

It is not a de Polignac number, because 806500655 - 2²⁰ = 805452079 is a prime.

It is a congruent 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 31 ways as a sum of consecutive naturals, for example, 316376 + ... + 318914.

It is an arithmetic number, because the mean of its divisors is an integer number (33227010).

Almost surely, 2^806500655 is an apocalyptic number.

806500655 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

806500655 is a deficient number, since it is larger than the sum of its proper divisors (256763665).

806500655 is a wasteful number, since it uses less digits than its factorization.

806500655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2699.

The product of its (nonzero) digits is 36000, while the sum is 35.

The square root of 806500655 is about 28398.9551744426. The cubic root of 806500655 is about 930.8254339598.

The spelling of 806500655 in words is "eight hundred six million, five hundred thousand, six hundred fifty-five".