80859860 has 12 divisors (see below), whose sum is σ = 169805748. Its totient is φ = 32343936.

The previous prime is 80859853. The next prime is 80859887. The reversal of 80859860 is 6895808.

It can be written as a sum of positive squares in 2 ways, for example, as 34128964 + 46730896 = 5842^2 + 6836^2 .

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 3 ways as a sum of consecutive naturals, for example, 2021477 + ... + 2021516.

It is an arithmetic number, because the mean of its divisors is an integer number (14150479).

Almost surely, 2^80859860 is an apocalyptic number.

It is an amenable number.

80859860 is an abundant number, since it is smaller than the sum of its proper divisors (88945888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80859860 is a wasteful number, since it uses less digits than its factorization.

80859860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4043002 (or 4043000 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 44.

The square root of 80859860 is about 8992.2110740351. The cubic root of 80859860 is about 432.4252000684.

The spelling of 80859860 in words is "eighty million, eight hundred fifty-nine thousand, eight hundred sixty".