80820586 has 32 divisors (see below), whose sum is σ = 152990208. Its totient is φ = 31104240.

The previous prime is 80820541. The next prime is 80820611. The reversal of 80820586 is 68502808.

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, 9621 + ... + 15943.

It is an arithmetic number, because the mean of its divisors is an integer number (4780944).

Almost surely, 2^80820586 is an apocalyptic number.

80820586 is a deficient number, since it is larger than the sum of its proper divisors (72169622).

80820586 is a wasteful number, since it uses less digits than its factorization.

80820586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6426.

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 80820586 is about 8990.0270299927. The cubic root of 80820586 is about 432.3551784382.

It can be divided in two parts, 80820 and 586, that added together give a triangular number (81406 = T₄₀₃).

The spelling of 80820586 in words is "eighty million, eight hundred twenty thousand, five hundred eighty-six".